What are fish tank heaters?

Fish tank heaters are underwater devices that maintain a desired temperature for your pet fish and surrounding aquatic life. To do this, heaters usually possess a thermostat. The thermostat monitors the water temperature, turning the heater on and off to maintain its optimal setting.

Are tank heaters safe for fish?

Yes, tank heaters are usually safe for fish, primarily because fish require stable water temperatures to survive. Many fish are cold-blooded by nature, so they depend on outside sources of heat to help in maintaining their body temperature.

Do aquarium heaters use a lot of electricity?

Aquarium heaters can use a good bit of energy, but the amount depends on several factors. These factors include: heater wattage, size of tank, heater cycling, filters, pumps, and lighting. Purchasing energy-efficiency tank equipment can help offset the electricity costs in many cases.

Do you leave a fish tank heater on all the time?

It's important that fish tank heaters be left on all the time. A heater is monitored by its thermostat, so it automatically turns on and off to maintain a consistent water temperature. That consistent water temperature is vital to the health of fish and underwater plants.

Aquarium & Fish Tank Heaters & Thermometers - Page 3 (Free Shipping)

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OASE Indoor Aquatics HeatUp 100 Adjustable Fish Heater

Rated 4 out of 5 stars

4

$37.51 Chewy Price

$42.99 List Price

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K&H Pet Products Thermo-Pond Perfect Climate Submersible Pond Deicer

Rated 3.3 out of 5 stars

19

$33.21 Chewy Price

$86.99 List Price

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Zoo Med Aqua Cool Aquarium Cooling Fan slide 2 of 4

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Zoo Med Aqua Cool Aquarium Cooling Fan

Rated 2.3 out of 5 stars

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$23.59 Chewy Price

$45.99 List Price

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OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White slide 2 of 8

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OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White slide 7 of 8

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OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White

Rated 1 out of 5 stars

1

$39.99 Chewy Price

$70.99 List Price

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Lifegard Led Digital Thermometer, Blue

Rated 4.4 out of 5 stars

5

$34.49 Chewy Price

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Arrives between Apr 13 and Apr 17

Rated 4.5 out of 5 stars

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$34.99 Chewy Price

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Free delivery on first-time orders over $35
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Arrives between Apr 11 and Apr 15

OASE Indoor Aquatics Filtosmart Thermo 100 External Fish Heater

Rated 3 out of 5 stars

3

$134.99 Chewy Price

$169.99 List Price

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JBJ Aquarium Arctica Titanium Auqarium Chiller, 1/3-hp

Rated 5 out of 5 stars

3

$980.84 Chewy Price

$1059.38 List Price

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Arrives between Apr 12 and Apr 16

Lifegard Digital Thermometer & Hygrometer, Black

Rated 3.2 out of 5 stars

5

$51.00 Chewy Price

$57.73 List Price

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Free delivery on first-time orders
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Arrives between Apr 13 and Apr 17

OASE Indoor Aquatics Bioplus Thermo 100 Internal Fish Heater

$84.99 Chewy Price

$99.99 List Price

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OASE Indoor Aquatics Bioplus Thermo 50 Internal Fish Heater

Rated 3 out of 5 stars

2

$65.59 Chewy Price

$94.99 List Price

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OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, White

$98.99 Chewy Price

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OASE Indoor Aquatics Filtosmart Thermo 300 External Fish Heater

Rated 1 out of 5 stars

1

$199.32 Chewy Price

$249.99 List Price

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JBJ Aquarium C-Breeze Aquarium Cooling Fan

Rated 1 out of 5 stars

1

$60.27 Chewy Price

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Arrives between Apr 12 and Apr 16

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, Dark Blue

Rated 1 out of 5 stars

1

$88.99 Chewy Price

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Hydor Micro & Mini Aquarium Slim Fish Heater, Black, 15-watt

Rated 4.4 out of 5 stars

10

$15.29 Chewy Price

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Arrives between Apr 11 and Apr 15

Hydor Betta & Betta Bowl Slim Heater, 7.5-watt

Rated 3.8 out of 5 stars

41

$15.12 Chewy Price

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Free delivery on first-time orders over $35
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Arrives between Apr 11 and Apr 15

Zoo Med Digital Aquarium Thermometer

Rated 3.4 out of 5 stars

18

$8.99 Chewy Price

$10.99 List Price

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Free 1-3 day delivery on first-time orders over $35
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Out of Stock

Eheim Jager Thermostat Aquarium Heater, 250-watt

Rated 4.3 out of 5 stars

175

Free 1-3 day delivery on first-time orders
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Out of Stock

Aquatop Floating Glass Thermometer with Suction Cup Mount

Rated 1 out of 5 stars

1

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Out of Stock

Lifegard Pond Tube Thermometer

Rated 5 out of 5 stars

7

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 13 and Apr 17

Out of Stock

OASE Indoor Aquatics Bioplus Thermo 200 Internal Fish Heater

Rated 5 out of 5 stars

2

Free 1-3 day delivery on first-time orders
Free 365-day returns

Out of Stock

Hydor Micro & Mini Aquarium Slim Heater, 15-watt

Rated 3.8 out of 5 stars

36

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 11 and Apr 15

Aquarium & Fish Tank Heaters & Thermometers

OASE Indoor Aquatics HeatUp 100 Adjustable Fish Heater

K&H Pet Products Thermo-Pond Perfect Climate Submersible Pond Deicer

Zoo Med Aqua Cool Aquarium Cooling Fan

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White

Lifegard Led Digital Thermometer, Blue

OASE Indoor Aquatics Biomaster Thermo 600 External Fish Heater

OASE Indoor Aquatics HeatUp 300 Adjustable Fish Heater

OASE Indoor Aquatics Filtosmart Thermo 200 External Fish Heater

OASE Indoor Aquatics HeatUp 150 Adjustable Fish Heater

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, Dark Blue

Hydor Theo Aquarium Fish Heater, Black, 400-watt

OASE Indoor Aquatics Filtosmart Thermo 100 External Fish Heater

JBJ Aquarium Arctica Titanium Auqarium Chiller, 1/3-hp

Lifegard Digital Thermometer & Hygrometer, Black

OASE Indoor Aquatics Bioplus Thermo 100 Internal Fish Heater

OASE Indoor Aquatics Bioplus Thermo 50 Internal Fish Heater

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, White

OASE Indoor Aquatics Filtosmart Thermo 300 External Fish Heater

JBJ Aquarium C-Breeze Aquarium Cooling Fan

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, Dark Blue

Hydor Micro & Mini Aquarium Slim Fish Heater, Black, 15-watt

Hydor Betta & Betta Bowl Slim Heater, 7.5-watt

Zoo Med Digital Aquarium Thermometer

Eheim Jager Thermostat Aquarium Heater, 250-watt

Aquatop Floating Glass Thermometer with Suction Cup Mount

Lifegard Pond Tube Thermometer

OASE Indoor Aquatics Bioplus Thermo 200 Internal Fish Heater

Hydor Micro & Mini Aquarium Slim Heater, 15-watt

Category

Thermometers

Tank Heaters

Product Type

Aquarium Type

Brand

Fish Type

Price

Customer Rating