🐠 Melhores Aquarium Heaters 2025

Compare the best aquarium heaters with expert reviews and ratings.

Última atualização: 21 de dezembro de 2025 👁️ 3 vendo agora

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Rachel Foster
Revisado por Rachel Foster editor colaborador
# Product Price Rating Reviews Action
1
$23.99
★★★★☆
4.3 / 5
821 View Deal
2
$8.67
★★★★☆
4.2 / 5
843 View Deal
3
$17.99
★★★★☆
4.3 / 5
24,349 View Deal
4
$47.99
★★★★☆
4.2 / 5
1,774 View Deal
5
$12.72
★★★★☆
4.4 / 5
8,304 View Deal
6
$17.97
★★★★☆
4.4 / 5
16,564 View Deal
7
$39.59
★★★★★
4.5 / 5
1,690 View Deal
8
$38.20
★★★★★
4.5 / 5
5,353 View Deal
9
$18.68
★★★★☆
4.3 / 5
24,349 View Deal
10
$22.99
★★★★☆
4.4 / 5
180 View Deal
11
$9.99
★★★★☆
4.3 / 5
11,608 View Deal
12
$16.99
★★★★☆
4.4 / 5
638 View Deal
13
$16.97
★★★★☆
4.4 / 5
160 View Deal
14
$6.69
★★★★☆
4.3 / 5
5,271 View Deal
15
$22.99
★★★★★
4.7 / 5
166 View Deal
16
$51.99
★★★★☆
4.2 / 5
1,774 View Deal
17
$36.96
★★★★☆
4.3 / 5
6,150 View Deal
18
$32.89
★★★★☆
4.4 / 5
5,444 View Deal
19
$14.76
★★★★☆
4.4 / 5
8,304 View Deal
20
$54.49
★★★★☆
4.2 / 5
5,994 View Deal

Detailed Reviews

#1

Orlushy 300W Submersible Aquarium Heater, Adjustable Fish Tank Heater with Digit...

by Orlushy
$23.99 $27.99
★★★★☆ (4.3)
821 avaliações

Nossa opinião

The Orlushy 300W Submersible Aquarium Heater is ideal for aquariums ranging from 40 to 60 gallons, providing efficient and reliable heating. Its compact 8.6-inch design allows for discreet placement, while the durable quartz glass construction ensures longevity. Equipped with a digital display and external controller, this heater offers precise temperature management, making it a valuable addition for maintaining optimal aquatic environments.

Principais características
  • Orlushy 300W Aquarium Heater Orlushy 300W heater can work perfectly in 40-60 gallons tank, suitable ...
  • Safer and More Durable Quartz Glass This aquarium heater is made of gray quartz glass, which has hig...
  • Rapid Water Heating and Accurate Water Sensor With uniformly wound premium nickel-chromium wire, hea...
  • External Controller with LED Digital Display External control reduces the risk that water gets in an...
Prós
  • Temperature resistant and explosion
  • 60 gallon capacity for versatility
  • Customers say: "Easy to use and powerful for its size"
  • Solid 4.3★ rating with proven track record
  • Currently $4 off regular price
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"I have had this heater in use for several weeks now and it is operating much better than expected. I am using it to heat a 250 gallon tank of water inside an unheated greenhouse. This little heater is pu punching above its weight. Temperatures in the green house have gotten down to freezing but the..."

— Amazon Customer
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#2

AQUANEAT Aquarium Heater, 50W Fish Tank Heater, Adjustable Submersible Water The...

by AQUANEAT
$8.67
★★★★☆ (4.2)
843 avaliações

Nossa opinião

The Aquaneat 50W Aquarium Heater is designed for fish tanks between 5 to 15 gallons, ensuring optimal water temperature for your aquatic pets. Its adjustable thermostat allows for precise temperature control, while the built-in thermometer provides easy monitoring. With a compact 6.75-inch design and a strong customer rating of 4.2 from 843 reviews, this heater offers reliable performance at an affordable price, making it an excellent choice for both novice and experienced aquarium owners.

Principais características
  • The 50W aquarium heater is recommended for 5 to 15 gallon fish tank; heater length 6.75”; power cord...
  • Adjustable Temp An easy-to-access dial on the top makes it a breeze to adjust the water temp from 65...
  • Steady Temp The red light automatically shuts off when the target temp is reached and then the heate...
  • Includes 1x 50W Small Aquarium Heater, 2x Suction Cups, 1x Thermometer Strip
Prós
  • 15 gallon capacity for versatility
  • Customers say: "easy to adjust and the light turns red"
  • Solid 4.2★ rating with proven track record
Contras
  • Some note: problem though as I have a separate digital one
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"My other heater stopped working, so I replaced it with this one. For the price it seems to be working very well! It took less than 24 hours to heat my Bettas 10 gallon tank from 64 😱 to 78!! It it slim and looks good in the tank. The temp gauge is easy to adjust and the light turns red while heat..."

— Amazon Customer
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#3

Orlushy Submersible Aquarium Heater,100W Adjustable Fish Tahk Heater with 2 Suct...

by Orlushy
$17.99
★★★★☆ (4.3)
24,349 avaliações

Nossa opinião

The Orlushy 100W Adjustable Submersible Aquarium Heater is designed for 10 to 20-gallon tanks, ensuring optimal temperature control for both marine and freshwater environments. Its durable explosion-proof quartz glass construction enhances safety, while the included suction cups facilitate easy installation. With a user-friendly thermometer and a strong customer rating of 4.3 from over 24,000 reviews, this heater offers reliable performance and peace of mind for aquarium enthusiasts.

Principais características
  • ★100W aquarium heater is suitable for 10 to 20 gallons aquariums,Length - 9",voltage 110-120V, power...
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be ...
  • ★Explosion Proof 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy...
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-...
Prós
  • It shows an area to adjust the temperature
  • 20 gallon capacity for versatility
  • Solid 4.3★ rating with proven track record
Contras
  • Some note: but rather keep them warm at night
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Its a really good lil heater i bought it about 3 months ago and my betta loves sleeping on it for some reason. Also dw it wont burn your fish to a crisp bc like i said my betta likes sleeping on it instead of the plant leaves so if you have a betta with no place to sleep i suggest you put the heater..."

— Amazon Customer
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#4

hygger Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with D...

by hygger
$47.99
★★★★☆ (4.2)
1,774 avaliações

Nossa opinião

The Hygger Submersible Aquarium Heater is available in 300W, 500W, 800W, and 1000W options, designed to efficiently heat freshwater and saltwater tanks ranging from 40 to 80 gallons. It features a user-friendly digital LED controller for precise temperature management, along with built-in overheating and out-of-water protection for added safety. With a solid rating of 4.2 from 1,774 reviews, this heater provides reliable performance and peace of mind for maintaining a stable aquatic environment.

Principais características
  • 300 Watts Aquarium Heater - Suitable for 40 to 80 gallon saltwater and freshwater aquariums with a l...
  • Overheating & Out Of Water Protection - Automatically cuts off power when temperature exceeds 94°F o...
  • Digital LED Controller - Adjustable temperature range of 59℉-93℉ with easy-to-read display for curre...
  • Efficient And Explosion Proof - Made of explosion-proof quartz glass and high-temperature resistant ...
Prós
  • Adjustable temperature range of 59℉
  • 80 gallon capacity for versatility
  • Customers say: "works perfectly"
  • Solid 4.2★ rating with proven track record
Contras
  • Mixed experiences reported by some users
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Best heater, just stop searching, this is the one.No headache, accuracy, great technology.Got mine about an year ago to fight ick and works perfectly! Im here to buy a bigger one since I upgraded my tank."

— Amazon Customer
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#5

HITOP 25W 50W 100W 200W 300W Adjustable Aquarium Heater, Submersible Fish Tank H...

by HITOP
HITOP 25W 50W 100W 200W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (50W) Amazon's Choice
$12.72 $14.97
★★★★☆ (4.4)
8,304 avaliações

Nossa opinião

The Hitop 50W Adjustable Submersible Aquarium Heater is ideal for small tanks up to 15 gallons, offering precise temperature control with an adjustable range from 68°F to 93°F. Its durable thickened glass construction ensures enhanced safety, while the included suction cup allows for easy installation. With a solid rating of 4.4 from over 8,300 reviews, this heater combines reliability and performance, making it a valuable addition to your aquarium setup.

Principais características
  • Compact Design - 50W heater measures 7.2 inches and features a 4.9ft power cord, ideal for aquariums...
  • Enhanced Safety - 2mm thickened quartz glass is 33% thicker than standard heaters, providing added s...
  • User-Friendly Adjustment - Adjustable temperature range from 68 to 93 °F with automatic on/off funct...
  • Reliable Temperature Regulation - Built-in thermostat maintains water temperature within ±2°F, inclu...
Prós
  • 15 Gallon capacity for versatility
  • Customers say: "easy to set up"
  • Solid 4.4★ rating with proven track record
  • Amazon's Choice for value and quality
  • Currently $2 off regular price
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Build quality is amazing. The temperature is accurate. The value for money is economical. It’s easy to set up. I works really well, I love it. I use it on my 10 gallon tank and it keeps it warm. I bought the 50W."

— Amazon Customer
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#6

Aquecedor submersível Tetra 26446 HT com termostato eletrônico, 100 watts, multi...

by Tetra
Aquecedor submersível Tetra 26446 HT com termostato eletrônico, 100 watts, multicolorido, 10-30 galões Amazon's Choice
$17.97
★★★★☆ (4.4)
16,564 avaliações

Nossa opinião

The Tetra 26446 HT Submersible Aquarium Heater is designed for aquariums ranging from 10 to 30 gallons, providing a dependable 100-watt heating solution. Its electronic thermostat ensures precise temperature control, maintaining a stable 78°F for optimal aquatic health. With a strong rating of 4.4 from over 16,500 reviews, this heater is a trusted choice for aquarium enthusiasts seeking to create a comfortable environment for their fish and plants.

Principais características
  • AQUARIUM HEATER Submersible heater is designed to keep your aquarium at the optimum temperature.
  • AUTOMATIC THERMOSTAT Electronic thermostat keeps water at a consistent 78 degrees.
  • INDICATOR LIGHT The red light shows when water is heating; green indicates that the heater is on sta...
  • EASY TO USE Just attach to an aquarium wall – the suction cup securely attaches heater to tank.
Prós
  • The suction cup securely attaches heater to tank
  • Watt heater for 10 to 30 gallon aquariums
  • 30 gallon capacity for versatility
  • Customers say: "perfect for a small tank; it tucks neatly behind a"
  • Solid 4.4★ rating with proven track record
Contras
  • Not Prime eligible - shipping times may vary
  • Compare specs with alternatives before deciding
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"I’m using the Tetra HT 50-watt heater in a 5-gallon tank, and it’s been excellent so far. The built-in thermostat keeps the water right around 78°F, and the temperature stays steady day and night without needing to adjust anything. I checked it against a thermometer and it’s always within about a de..."

— Amazon Customer
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#7

Aquecedor de aquário Hitauing, aquecedor de tanque de peixes de 300 W com displa...

by HiTauing
Aquecedor de aquário Hitauing, aquecedor de tanque de peixes de 300 W com display digital LED e 5 proteção de segurança, aquecedor de aquário submersível com 2 ventosas e cordão de 8,2 pés para um tanque de peixes de 40-75 galões. Amazon's Choice
$39.59
★★★★★ (4.5)
1,690 avaliações

Nossa opinião

The HiTauing 300W Aquarium Heater is ideal for 40 to 75-gallon tanks, providing efficient heating with a quick warm-up time. It features an LED display for easy temperature monitoring and five safety protections to ensure reliable operation. With two suction cups for secure placement and an 8.2-foot cord for flexible installation, this heater offers both convenience and peace of mind for maintaining a stable aquatic environment.

Principais características
  • Aquarium Heater 300W - Produces stable power with quick heat up for 40 to 75 gallon tanks.
  • Safe and Durable Construction - Encased in high-durability ABS shell with high-temperature resistant...
  • Comprehensive Protection - Features over-temperature and off-water warnings to prevent damage.
  • Digital Display - Monitor and set water temperature in real time with a range of 63-94℉.
Prós
  • 75 gallon capacity for versatility
  • Customers say: "perfect for our 55 gallon aquarium"
  • 4.5★ rating from 1,690 verified buyers
  • Amazon's Choice for value and quality
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"This heater is perfect for our 55 gallon aquarium. You just set the temp and forget about it. It does all the work itself. Great function! The black blends right in with the aquarium decor so it’s not that noticeable.Very easy to set up. Anything that makes my life easy is a great value!"

— Amazon Customer
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#8

Aquecedor de aquário Hituing, 50W/100W/200W/300W/500W Aquecedor de tanques de pe...

by HiTauing
$38.20
★★★★★ (4.5)
5,353 avaliações

Nossa opinião

The HiTauing Submersible Aquarium Heater is available in 50W, 100W, 200W, 300W, and 500W options, making it suitable for tanks ranging from small to large. Designed with over-temperature protection and automatic power-off features, it ensures the safety of your aquatic environment while providing rapid and efficient heating. With a durable explosion-proof quartz glass construction, this heater combines reliability with performance, making it an essential addition to your aquarium setup.

Principais características
  • Rapid Heating - The 300W heater quickly warms 40-75 gallon tanks using stable nickel-chromium wire.
  • Intelligent Water Sensor - Automatically stops heating when out of water or overheating, ensuring sa...
  • Explosion-Proof Design - Made from durable quartz glass and high-temperature resistant materials for...
  • Accurate Digital Display - External controller shows water temperature in Fahrenheit and Celsius wit...
Prós
  • The 300W heater quickly warms 40
  • 75 gallon capacity for versatility
  • Customers say: "great price — exactly what I was looking for"
  • 4.5★ rating from 5,353 verified buyers
Contras
  • Not Prime eligible - shipping times may vary
  • Compare specs with alternatives before deciding
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"I’ve been using the HiTauing submersible heater in my 75, 125, and two 10 gallon freshwater tanks for a few weeks now, and I’m really happy with how steady it keeps the water temperature. The dual temperature control works great — I can toggle between °C and °F easily, and the LED display is bright ..."

— Amazon Customer
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#9

Aquecedor de aquário submersível Orlushy, aquecedor de peixe TAHK ajustável de 3...

by Orlushy
$18.68 $21.99
★★★★☆ (4.3)
24,349 avaliações

Nossa opinião

The Orlushy 300W Adjustable Submersible Aquarium Heater is designed for 40 to 55-gallon aquariums, making it ideal for both marine and freshwater environments. Its compact 11-inch design allows for easy installation, while the adjustable temperature settings ensure optimal conditions for your aquatic life. Equipped with suction cups for secure placement and a built-in thermometer for accurate readings, this heater offers durability and reliability, enhancing the overall health of your aquarium.

Principais características
  • ★300W aquarium heater is suitable for 40 to 55 gallons aquariums,Length - 11 inch,voltage 110-120V, ...
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be ...
  • ★Explosion Proof 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy...
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-...
Prós
  • It shows an area to adjust the temperature
  • 55 gallon capacity for versatility
  • Solid 4.3★ rating with proven track record
  • Currently $3 off regular price
Contras
  • Some note: but rather keep them warm at night
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Its a really good lil heater i bought it about 3 months ago and my betta loves sleeping on it for some reason. Also dw it wont burn your fish to a crisp bc like i said my betta likes sleeping on it instead of the plant leaves so if you have a betta with no place to sleep i suggest you put the heater..."

— Amazon Customer
Ver preço na Amazon →
#10

Aquecedor de peixes Aquamiracle Aquecedor de peixes Aquecedor de peixes 800W com...

by AquaMiracle
$22.99 $45.99
★★★★☆ (4.4)
180 avaliações

Nossa opinião

The AquaMiracle 800W Aquarium Heater is designed for 120-160 gallon tanks, ensuring precise temperature control with advanced inverter technology. Key features include dry-run protection and an external thermostat with an LED display, which enhance safety and ease of use. With a competitive price of $22.99 and a solid rating of 4.4 from 180 reviews, this heater provides reliable performance and excellent value for maintaining a healthy aquatic environment.

Principais características
  • INVERTER TECHNOLOGY – This aquarium heater uses the advanced inverter technology to heat water faste...
  • MORE ACCURATE EXTERNAL THERMOSTAT – The in-built chips of this submersible heater keeps water at a c...
  • HIGH STANDARD MATERIALS – Stable nickel-chromium heating wire, highly heat-conductive sand, housed b...
  • INTELLIGENT SENSORS FOR PROTECTIONS - With the multiple sensors this fish tank heater will stop work...
Prós
  • This heater can be used for both fresh and marine water
  • Solid 4.4★ rating with proven track record
  • Currently $23 off regular price
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
Ver preço na Amazon →
#11

Aquecedor betta submersível de pequeno aquário pulaco 25W com tira de termômetro...

by PULACO
$9.99
★★★★☆ (4.3)
11,608 avaliações

Nossa opinião

The Aquecedor betta submersível de pequeno aquário ... rounds out our list as a reliable option in this category. A key highlight is must be fully submerged; do not operate when tank is empty. Key specs include 6 Gallon capacity. Customers particularly praise that it great for my betta tank. At just $9.99, it's accessible for most budgets. With 4,000+ bought last month, it's clearly a popular choice.

Principais características
  • Betta Heater - Designed for full submersion in tanks up to 6 gallons, not suitable for tanks under 1...
  • Quick Installation - Can be placed vertically or horizontally with automatic temperature control at ...
  • Temperature Regulation - Heats water to 78°F, indicated by a red light; switches to green when tempe...
  • Safety Note - Must be fully submerged; do not operate when tank is empty. Use a pump for water circu...
Prós
  • Must be fully submerged; do not operate when tank is empty
  • 6 Gallon capacity for versatility
  • Customers say: "great for my betta tank"
  • Solid 4.3★ rating with proven track record
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"This small heater works great for my betta tank! It keeps the water at a steady 78°F with reliable temperature control, heats quickly, and is perfect for small aquariums. The compact size fits well, the suction cup holds firmly, and the included thermometer strip is a great bonus. Easy to use, accur..."

— Amazon Customer
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#12

Aquecedor Betta de pequeno aquário Hygger, aquecedor de tanque de peixes submers...

by hygger
Aquecedor Betta de pequeno aquário Hygger, aquecedor de tanque de peixes submersível 10W/25W/50W/100W com display digital LED, adequado para água salgada marinha e água doce até 10/05/16/26 galão Amazon's Choice
$16.99
★★★★☆ (4.4)
638 avaliações

Nossa opinião

The Aquecedor Betta de pequeno aquário Hygger rounds out our list as a reliable option in this category. Standout features include with premium quartz the aquarium heater is made of 2mm thickened quartz glass and mini size this small aquarium heater is “thumb size” - only 4. Key specs include 5 gallon capacity and 10 Watt of power. Customers particularly praise that it like the small size and that it's submersible all the way u. At just $16.99, it's accessible for most budgets.

Principais características
  • ★10 Watt Aquarium Heater Temperature range is 59-93°F, for small glass or acrylic aquariums up 1 to ...
  • ★Made with Premium Quartz The aquarium heater is made of 2mm thickened quartz glass. This fish tank ...
  • ★Dry Run / Overheating Protection When the water temperature exceeds 95°F or when the warer level is...
  • ★Super Mini Size This small aquarium heater is “thumb size” - only 4.1” (10.5cm) in length. Great fo...
Prós
  • 5 gallon capacity for versatility
  • Solid 4.4★ rating with proven track record
  • Amazon's Choice for value and quality
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"I've only had this heater for a week but so far it is working spot on and keeping my tank at the perfect temperature. It's been many years since I used an aquarium heater and I can see great improvements in the technology. I particularly like the small size and that it's submersible all the way unde..."

— Amazon Customer
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#13

Aquecedor de aquário Aquaneat, aquecedor de tanque de peixes de 300 W, termostat...

by AQUANEAT
$16.97
★★★★☆ (4.4)
160 avaliações

Nossa opinião

The Aquecedor de aquário Aquaneat rounds out our list as a reliable option in this category. A key highlight is always fully submerge it before turning it on. Key specs include 75 gallon capacity and 300W of power. At just $16.97, it's accessible for most budgets.

Principais características
  • Ideal for 40-75 gallon Fish Tank This 300W aquarium heater (11.5" length) with 6ft power cord (110-1...
  • Easy Temperature Control An easy-to-access dial on the top makes it a breeze to adjust the water tem...
  • Steady Temp The red light automatically shuts off when the target temp is reached, and the heater ma...
  • Package Includes 1x 300W Aquarium Heater, 2x Suction Cups, 1x Digital Thermometer for easy temperatu...
Prós
  • Always fully submerge it before turning it on
  • 75 gallon capacity for versatility
  • Solid 4.4★ rating with proven track record
Contras
  • Not Prime eligible - shipping times may vary
  • Compare specs with alternatives before deciding
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Very good came very fast and works well."

— Amazon Customer
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#14

Mini aquecedor de aquário 25W aquecedor de aquário pequeno 25 watts com adesivo ...

by DaToo
$6.69
★★★★☆ (4.3)
5,271 avaliações

Nossa opinião

The Mini aquecedor de aquário 25W aquecedor de aquá... rounds out our list as a reliable option in this category. Key specs include 5 gallon capacity and 25W of power. At just $6.69, it's accessible for most budgets. With 5,000+ bought last month, it's clearly a popular choice.

Principais características
  • 25W Betta Aquarium Heater Creating and maintaining a perfect and comfortable water temperature for o...
  • Precise And Constant Temperature No need to set, DaToo Fish Tank Heater will automatically keep the ...
  • The Smallest 25W Betta Heater For most fish lovers who have small fish tanks of 1 to 5 gallons, a sm...
  • Safe And Durable Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures ...
Prós
  • 5 gallon capacity for versatility
  • Solid 4.3★ rating with proven track record
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"My Betta tank is in my poorly designed bedroom, heating vent at the top of the wall around the corner from the main part of the room so it is always cold in here. I was having a hard time keeping the water temperature at a good level so I ordered this little heater. Within 15 minutes of installing i..."

— Amazon Customer
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#15

Aquecedor de aquário submersível 100W/200W/300W/500W, aquecedor de tanque de pei...

by HANLESHUKA
$22.99 $25.99
★★★★★ (4.7)
166 avaliações

Nossa opinião

The Aquecedor de aquário submersível 100W/200W/300W... rounds out our list as a reliable option in this category. A key highlight is friendly design and easy installation. Key specs include 40 gallon capacity. Customers consistently report high satisfaction with this purchase. Currently 12% off at $22.99, it represents excellent value.

Principais características
  • Premium Safety and Durability - Maintains precise temperature control within 1℉, automatically adjus...
  • Versatile and Efficient Heating - Suitable for various aquatic environments, providing fast and even...
  • Smart Dual Temperature System - Easily switch between Fahrenheit and Celsius for convenient temperat...
  • Advanced Safety Features - Automatically shuts off when overheating or when water level is low, with...
Prós
  • Friendly Design and Easy Installation
  • 40 gallon capacity for versatility
  • Solid 4.7★ rating with proven track record
  • Currently $3 off regular price
Contras
  • Not Prime eligible - shipping times may vary
  • Compare specs with alternatives before deciding
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"The fish are nice and happy with the new heater. The display is large and easy to read. Easy to set."

— Amazon Customer
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#16

Aquecedor de aquário Hygger 300W/500W/800W/1000W, aquecedor de tanque de peixes ...

by hygger
$51.99
★★★★☆ (4.2)
1,774 avaliações

Nossa opinião

The Aquecedor de aquário Hygger 300W/500W/800W/1000W rounds out our list as a reliable option in this category. Standout features include adjustable temperature range of 59℉ and includes heater, controller, suction cups, bracket, and hook with a 12. Key specs include 135 gallon capacity and 500 WATTS of power. Customers particularly praise that it works perfectly.

Principais características
  • 500 Watts Aquarium Heater - Suitable for 66 to 135 gallon saltwater and freshwater aquariums with a ...
  • Overheating & Out Of Water Protection - Automatically cuts off power when water exceeds 94°F or is b...
  • Digital LED Controller - Adjustable temperature range of 59℉-93℉ with an accuracy of ±1°F and easy-t...
  • Efficient And Explosion Proof - Made of explosion-proof quartz glass and high-temperature resistant ...
Prós
  • Adjustable temperature range of 59℉
  • 135 gallon capacity for versatility
  • Customers say: "works perfectly"
  • Solid 4.2★ rating with proven track record
Contras
  • Mixed experiences reported by some users
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Best heater, just stop searching, this is the one.No headache, accuracy, great technology.Got mine about an year ago to fight ick and works perfectly! Im here to buy a bigger one since I upgraded my tank."

— Amazon Customer
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#17

EHEIM 3619090 Jager Aqueium termostato 300W, preto

by Eheim
$36.96
★★★★☆ (4.3)
6,150 avaliações

Nossa opinião

The EHEIM 3619090 Jager Aqueium termostato 300W rounds out our list as a reliable option in this category. Key specs include 264 Gallon capacity and 5W of power. At just $36.96, it's accessible for most budgets.

Principais características
  • Heater is meant for Tanks between 159-264 Gallons.
  • Size of Heater is 20” X 1.4” Diameter
  • Fully submersible, will automatically turn off when water level dips too low.
  • Thermo safey control protects against running dry.
Prós
  • 264 Gallon capacity for versatility
  • Solid 4.3★ rating with proven track record
Contras
  • Not Prime eligible - shipping times may vary
  • Compare specs with alternatives before deciding
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Despite being replaced by the newer ThermoControl E series there are still plenty of these OG Eheim TruTemp heaters floating around for sale. I know people who have run these for a decade and I run a small fleet myself in varying sizes of tanks. They're a heating element inside a sealed glass tube a..."

— Amazon Customer
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#18

Aquecedor de aquário submersível Fluval M de 100 watts – aquecimento compacto, d...

by Fluval
Aquecedor de aquário submersível Fluval M de 100 watts – aquecimento compacto, de alto desempenho e confiável para tanques de água doce e salgada Amazon's Choice
$32.89
★★★★☆ (4.4)
5,444 avaliações

Nossa opinião

The Aquecedor de aquário submersível Fluval M de 10... rounds out our list as a reliable option in this category. Key specs include 30 gallon capacity and 100 Watt of power. At just $32.89, it's accessible for most budgets.

Principais características
  • Powerful & Reliable Heating The Fluval M 100 Watt Submersible Heater ensures consistent and precise ...
  • Mirror Technology Designed with a unique reflective finish, the aquarium heater seamlessly blends in...
  • Compact & Sleek Design The Fluval M Series heater boasts a slim profile, making it easy to position ...
  • Versatile for All Aquariums Ideal for both freshwater and saltwater tanks, the Fluval M 100 Watt hea...
Prós
  • 30 gallon capacity for versatility
  • Solid 4.4★ rating with proven track record
  • Amazon's Choice for value and quality
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"I love this heater. I have been using it in my betta's tank for about a year, and so far, it has worked very well!This heater is not made for being completely submerged under water. The black and grey part (the part above the little wavy marks) must be above water, along with the cord. I put this he..."

— Amazon Customer
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#19

Hitop 25W 50W 100W 200W 300W ajustável, termóstato de aquecedor de tanque de pei...

by HITOP
$14.76 $15.97
★★★★☆ (4.4)
8,304 avaliações

Nossa opinião

The Hitop 25W 50W 100W 200W 300W ajustável rounds out our list as a reliable option in this category. A key highlight is suitable for small fish tanks, recommended for aquariums 15 to 30 gallons. Key specs include 30 Gallon capacity and 100W of power. Customers particularly praise that it easy to set up. Currently 8% off at $14.76, it represents excellent value.

Principais características
  • 100W Power - Suitable for small fish tanks, recommended for aquariums 15 to 30 gallons.
  • Adjustable Temperature - Temperature range of 68 to 93 °F, automatically adjusts to maintain the set...
  • Accurate Temperature Control - Built-in thermostat maintains water temperature within ±2°F, includes...
  • Thickened Glass - 2mm quartz glass, 33% thicker than standard heaters for enhanced safety.
Prós
  • 30 Gallon capacity for versatility
  • Customers say: "easy to set up"
  • Solid 4.4★ rating with proven track record
  • Currently $1 off regular price
Contras
  • Not Prime eligible - shipping times may vary
  • Compact size may not suit larger households
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"Build quality is amazing. The temperature is accurate. The value for money is economical. It’s easy to set up. I works really well, I love it. I use it on my 10 gallon tank and it keeps it warm. I bought the 50W."

— Amazon Customer
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#20

Aquecedor eletrônico Fluval E 300 Watts

by Fluval
Aquecedor eletrônico Fluval E 300 Watts Amazon's Choice
$54.49
★★★★☆ (4.2)
5,994 avaliações

Nossa opinião

The Aquecedor eletrônico Fluval E 300 Watts rounds out our list as a reliable option in this category. Standout features include continuously monitors and displays aquarium water temperature in real time and being of your aquarium inhabitants.

Principais características
  • Continuously monitors and displays aquarium water temperature in real time
  • Intelligent digital microprocessor monitoring system with dual temperature sensors
  • Ensures the safety and well-being of your aquarium inhabitants
  • Precision temperature control allows settings in 0.5-degree increments
Prós
  • Being of your aquarium inhabitants
  • Solid 4.2★ rating with proven track record
  • Amazon's Choice for value and quality
Contras
  • Mixed experiences reported by some users
  • Not Prime eligible - shipping times may vary
O que os clientes dizem
★★★★★ Melhor avaliação Compra verificada

"THESE HEATERS ARE AWESOME.....THEY WORK GREAT.....I WOULD HIGHLY RECOMMEND"

— Amazon Customer
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Perguntas frequentes

What is the best aquarium heater for a beginner?

For beginners, the AQUANEAT 50W Aquarium Heater at $8.67 is a great choice due to its affordability and solid 4.2-star rating from 843 reviews. It’s simple to use and adjustable, making it suitable for smaller tanks, ensuring your fish stay in a comfortable environment.

How do I choose the right wattage for my aquarium heater?

The general guideline is to use 5 watts per gallon of water. For instance, if you have a 20-gallon tank, a 100W heater like the Orlushy 100W Submersible Heater at $17.99 would be ideal, as it provides sufficient heating while being adjustable to meet your specific temperature needs.

What are the key features to look for in an aquarium heater?

Look for features such as adjustable temperature settings, automatic shut-off for safety, and submersibility. For example, the hygger Aquarium Heater is available in various wattages (300W to 1000W) and boasts adjustable settings, making it versatile for different tank sizes and types.

How do Orlushy and HITOP heaters compare in terms of performance?

Both Orlushy and HITOP offer reliable heaters with good performance. The Orlushy 300W model, priced at $23.99, has a strong reputation with a 4.3-star rating, while the HITOP 300W at $12.72 offers excellent value with a 4.4-star rating and multiple wattage options, making them both strong contenders depending on your budget.

What maintenance tips should I follow for my aquarium heater?

Regularly check the heater for any signs of wear or damage, and ensure it's clean from algae or mineral buildup. It’s also wise to periodically test the water temperature with a separate thermometer to ensure the heater is functioning properly, especially if you are using models like the hygger, which can be adjusted for precision.

Are there any budget-friendly options for larger aquariums?

Yes, the HITOP 300W Adjustable Aquarium Heater at $12.72 is a cost-effective option for larger tanks, providing sufficient heating without breaking the bank. It has a solid 4.4-star rating and can cater to the needs of various tank sizes, making it a smart choice for budget-conscious aquarists.

📖 Complete Buying Guide: Aquarium Heaters

Aquecedores de aquários: mantendo vivos os peixes tropicais sem cozinhá-los

Os aquecedores de aquários mantêm as temperaturas da água que os peixes tropicais exigem para a sobrevivência. A tecnologia é simples – um elemento de aquecimento com um termostato – mas as consequências da falha são graves. Aquecedores presos mataram tanques inteiros de peixes por superaquecimento. Compreender os tipos de aquecedores, o tamanho e os modos de falha ajudam a proteger seu investimento em gado.

a temperatura fundamental

A maioria dos peixes tropicais de água doce e de água salgada requerem temperaturas de 75-82°F da água. A temperatura ambiente (68-72°F) é letalmente fria para muitas espécies. Os aquecedores preenchem essa lacuna, sempre que a água cai abaixo do ponto de ajuste do termostato.

A estabilidade da temperatura importa tanto quanto atingir o número alvo. Flutuações rápidas enfatizam o sistema imunológico dos peixes, mesmo quando as temperaturas permanecem dentro de faixas aceitáveis. Aquecedores de qualidade com termostatos precisos minimizam oscilações; aquecedores baratos com controles imprecisos criam pequenas flutuações constantes.

Tipos e aplicativos de aquecedor

  • Aquecedores submersíveis de vidro* (US$15-50) são os designs mais comuns. Um elemento de aquecimento dentro de um tubo de vidro fica totalmente debaixo d'água. Eles são eficazes e acessíveis, mas o vidro pode rachar de impacto físico ou choque térmico. O ajuste do termostato fica na parte superior da unidade, acessível acima do nível da água.

  • Aquecedores de titânio* ($40-100) Use tubos de titânio resistentes à corrosão em vez de vidro. Eles são praticamente invasivos e preferidos para peixes grandes e agressivos que podem quebrar unidades de vidro. Os aquecedores de titânio geralmente separam o elemento de aquecimento do controlador, com termostatos externos que podem oferecer melhor precisão.

  • Aquecedores em linha* ($80-200) Instale nas linhas de retorno do filtro do canister, aquecendo a água à medida que flui. Eles eliminam o equipamento visível no tanque e removem qualquer risco de contato com o peixe com o aquecedor. No entanto, eles trabalham apenas com sistemas de filtragem de canister e exigem conhecimentos de encanamento para serem instalados.

  • Aquecedores sob o tanque* ($20-50) grudam embaixo do aquário, aquecendo o substrato de vidro por baixo. Eles são suplementares em vez de aquecimento primário - insuficientes para a maioria dos tanques tropicais, mas úteis para pequenos aumentos em salas de frio ou terrários.

Diretrizes para o tamanho da potência

A regra padrão: 3-5 watts por galão de água do aquário. Um tanque de 20 galões precisa de 60 a 100 watts; um tanque de 55 galões precisa de 165 a 275 watts. No entanto, isso varia significativamente com base em:

  • Diferença da temperatura ambiente *: Se o seu quarto fica a 70 ° F e você precisa de água a 78 ° F, você precisa de menos potência do que manter 80 ° F em uma sala de 65 ° F.

  • local do tanque *: Tanques próximos a janelas, paredes externas ou aberturas de HVAC experimentam mais variação de temperatura que exigem mais capacidade de aquecimento.

  • Construção do tanque *: O acrílico isola melhor do que o vidro; tanques maiores retêm o calor melhor do que os menores devido às relações volume-superfície.

  • Executando dois aquecedores menores* em vez de um aquecedor grande fornece redundância. Se um falhar, o outro mantém o aquecimento parcial. Se um falhar, o aquecedor restante é insuficiente para superaquecer o tanque rapidamente, dando tempo para você notar o problema.

O modo de falha que mata peixes

Os termostatos do aquecedor falham em duas direções: preso (peixe morre lentamente de frio) ou preso (o peixe cozinha em poucas horas). Falhas travadas causam as perdas mais dramáticas porque o aquecimento é rápido enquanto o resfriamento é lento.

Aquecedores de qualidade usam mecanismos de segurança redundantes. Os desligamentos automáticos são disparados se o nível da água cair abaixo do aquecedor (prevenindo o esgotamento do elemento). Algumas unidades incluem termostatos secundários que cortam a energia se a temperatura exceder os limites seguros, independentemente da configuração primária do termostato.

  • Controladores de temperatura externos* ($30-80) fornecem a proteção mais confiável. Esses dispositivos independentes conectam o aquecedor à tomada e cortam a energia de forma independente quando a temperatura atinge o valor definido. Mesmo que o termostato interno do aquecedor falhe, o controlador externo o interrompe.

Posicionamento e instalação

  • Posicionamento* Aquecedores próximos ao fluxo de água (filtro de saída ou powerhead) distribui o calor uniformemente e evita pontos quentes localizados. Aquecedores colocados em áreas de fluxo morto podem manter as temperaturas irregulares dos tanques.

  • Montagem horizontal* Aumenta a eficiência, pois o calor aumenta. Aquecedores horizontais aquecem a água em vez de apenas água acima deles. Muitos aquecedores funcionam em qualquer orientação; verifique as especificações do fabricante.

  • *Nunca seque **: os aquecedores de vidro funcionam sem submersão de água em minutos. Sempre desconecte os aquecedores antes das trocas de água que podem expor.

Precisão e verificação

Os mostradores do termostato do aquecedor são notoriamente imprecisos. O número no mostrador pode ter uma leitura de 78 ° F, mantendo 82 °F ou 74 °F. Sempre verifique a temperatura real da água com um termômetro independente.

  • Aquecedores ajustáveis* permitem compensar esse erro de calibração—se o seu aquecedor ajustado para 76°F mantiver 80°F de água, basta ajustar o botão mais abaixo.

  • Aquecedores predefinidos* ($12-25) oferecem simplicidade (sem ajuste necessário), mas se a predefinição deles não corresponder às suas necessidades, você ficará preso. Eles são bons para configurações tropicais comuns, mas limitam para requisitos de temperatura específicos.

Recomendações práticas

  • Para tanques de 10 a 30 galões*: um aquecedor submersível ajustável de 100 a 150 watts de Eheim, Fluval ou Aqueon ($25-40) lida com a maioria das situações de forma confiável. Considere adicionar um controlador de temperatura externo para um gado valioso.

  • Para tanques de 50+ galões*: dois aquecedores na metade da potência calculada (duas unidades de 100W para 55 galões em vez de 200 W) fornecem redundância. O titânio torna-se prático para durabilidade neste nível de investimento.

  • Para tanques de recife com coral caro*: aquecedores em linha removem qualquer risco de contato com o gado, e o titânio resiste melhor à corrosão em água salgada do que ao vidro. Os controladores externos são essenciais: você não pode permitir falhas travadas.

  • para configurações de reprodução *: A precisão importa mais do que em tanques de exibição. Aquecedores de titânio com controladores digitais externos permitem manter as temperaturas específicas com precisão.

  • para todas as configurações *: Verifique a temperatura com um termômetro digital confiável, não apenas com o mostrador do aquecedor. Verifique o aquecedor mensalmente quanto aos sintomas do termostato preso (funcionando continuamente quando estiver em temperatura ou nunca quando estiver frio).

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