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| Best Seller  | Unlike humans, fish always rely on the temperature of the water to maintain their body temperature. Therefore, the temperature of your aquarium is an important factor in the comfort and well-being of your fish. This aquarium heater will keep your tank... ... more | $49.99 $24.99 go to store |
 | VIVOSUN submersible aquarium heaters are more efficient, and the heating unit is completely submerged in the water, providing more consistent heating to the aquarium. An intelligent IC chip controls the heater temperature, making the temperature... ... more | $35.99 $33.14 go to store |
| Best Seller  | Adjustable Quartz Glass Aquarium Heater, 300 Watts, 300 W / 15.15 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 150 Watts, 150 W / 12 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | Preset Aquarium Heater, 150W, 150 W / 8 IN The Aqueon Preset Aquarium Heater 150W is a wonder heater that is preset to 78F. It is made of shatter-resistant construction, ensuring the safety of your fish. The heater has automatic safety shut off and overheat protection, giving you peace of mind.... ... more | go to store |
 | This 400W Titanium Aquarium Heater fits 70 to 80 gallons fish tanks, made of sturdy titanium alloy which is IPX8 water-resistant and resistant to rust, corrosion, scalding and explosions. Equipped with an informative LCD digital monitoring display and... ... more | FREE shipping go to store |
 | Hydor Slim Heaters helps your fish live a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of 5 to... ... more | go to store |
 | 5/8" hose External In-line Aquarium Heater, 200 Watts, 200 W / 4.02 IN Eth is a heater for aquariums also suitable for sump collection tanks and external filters for vertical positioning only. Accurate thanks to the electronic temperature control, it is specially designed to guarantee high resistance and avoid the risk of... ... more | go to store |
 | 1/2" hose External In-line Aquarium Heater, 200 Watts, 1.106 LB Eth is a heater for aquariums also suitable for sump collection tanks and external filters for vertical positioning only. Accurate thanks to the electronic temperature control, it is specially designed to guarantee high resistance and avoid the risk of... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 75 Watts, 75 W / 10.44 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 25 Watts, 25 W / 9.05 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 50 Watts, 50 W / 9.05 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 100 Watts, 100 W / 10.44 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | THEO Shatterproof Aquarium Heater Ideal for 5-14 Gallon Tanks, 7 Inches Long, 50W, .583 LB Theo is the fully submersible aquarium heater by Hydor, supplied complete with suction cups for both horizontal and vertical positioning. A knob with graduated scale allows you to adjust the thermostat to the desired temperature, maintaining it... ... more | go to store |
 | THEO Shatterproof Aquarium Heater Ideal for 23-40 Gallon Tanks, 12 Inches Long, 150W, .76 LB Theo is the fully submersible aquarium heater by Hydor, supplied complete with suction cups for both horizontal and vertical positioning. A knob with graduated scale allows you to adjust the thermostat to the desired temperature, maintaining it... ... more | go to store |
 | Pro 100 Submersible Aquarium Heater, 100 W / 10 IN For all the fish lovers out there, we've got the hot new item that's sure to make a splash in your aquarium - the Aqueon Pro 100 Submersible Aquarium Heater! This little powerhouse is packed with features that will keep your aquatic friends happy and... ... more | go to store |
 | Preset Aquarium Heater, 100W, 100 W / 6.4 IN Introducing the Aqueon Preset Aquarium Heater - a must-have for any fish lover! With its sleek and shatter-resistant construction, this heater is built to last. And the best part? No fiddling around with complicated temperature settings - it's preset... ... more | go to store |
 | Preset Aquarium Heater, 200W, 200 W / 9.75 IN When it comes to keeping your aquatic friends cozy, the Aqueon Preset Aquarium Heater 200W is the perfect solution! With no need for adjustment, this heater is preset to a comfortable 78F so your fish can feel right at home. It's built tough with... ... more | go to store |
 | Preset Aquarium Heater, 50W, 10 GAL GloFish Submersible Heater is designed to keep your aquatic fish comfortable, with an electronic thermostat that automatically maintains a consistent water temperature of 78 degrees and prevents overheating, extending heater life. An indicator light... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 200 Watts, 200 W / 13.19 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | Adjustable Quartz Glass Aquarium Heater, 250 Watts, 250 W / 14.17 IN Submersible Quartz Adjustable Heater safe for Freshwater and Saltwater tanks. Easy to set thermostat which features LED Power Indicator Light showing operation: Red-Heating and Green-Temperature Set. All Lifegard heaters are UL Listed with Thermal... ... more | go to store |
 | THEO Shatterproof Aquarium Heater Ideal for 32-60 Gallon Tanks, 200 Watts, .7625 LB Theo is the fully submersible aquarium heater by Hydor, supplied complete with suction cups for both horizontal and vertical positioning. A knob with graduated scale allows you to adjust the thermostat to the desired temperature, maintaining it... ... more | go to store |
 | Hydor Slim Heaters helps your fish live a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of 5 to... ... more | go to store |
 | Hydor Slim Heaters helps your fish live a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of 5 to... ... more | go to store |
 | Midwest Homes For Pets Theo Aquarium Heater in Black | 12.21 H x 1.3 W x 1.3 D in | Wayfair T11602 The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $44.99 $34.99 go to store |
 | The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $41.99 $28.94 go to store |
 | Midwest Homes For Pets Theo Aquarium Heater in Black | 9.85 H x 2.01 W x 3.35 D in | Wayfair T11702 The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $39.99 $27.61 go to store |
 | Midwest Homes For Pets Theo Aquarium Heater in Black | 16.78 H x 2.01 W x 3.35 D in | Wayfair T11502 The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $59.99 $36.26 FREE shipping go to store |
 | Midwest Homes For Pets Theo Aquarium Heater in Black | 16.03 H x 2.01 W x 3.04 D in | Wayfair T11402 The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $57.99 $45.99 FREE shipping go to store |
 | Pond Heater, 500 Watts, 500 WTS The Laguna Power Heat 500-watt De-Icer creates and maintains a thawed, open area at the surface of the pond, allowing toxic gases from fish respiration and decomposing organic matter to escape. ... more | go to store |
 | Midwest Homes For Pets Theo Aquarium Heater in Black | 9.85 H x 2.01 W x 3.35 D in | Wayfair T11702 The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $39.99 $27.61 go to store |
 | The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $42.99 $29.61 go to store |
 | The Theo fish tank heater has all the essential features for the precise and safe maintenance of the water temperature in your aquarium. The exclusive technology and the high quality of components guarantee a long life. The aquarium heater is... ... more | $41.99 $28.94 go to store |
 | An aquarium is a beautiful wonder, and it is important to keep its inhabitants happy and healthy. Some fish require aquarium water to be a specific temperature. To do this the water needs to be warmed by an aquarium heater. The biOrb Heater Pack... ... more | FREE shipping go to store |
 | Midwest Homes For Pets Hydor Aquarium Heater in Black | 5.4 H x 2.5 W x 0.99 D in | Wayfair T20101 Hydor Slim Heaters helps your fish live a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of 5 to... ... more | go to store |
 | Midwest Homes For Pets Hydor Aquarium Heater in Black | 3.35 H x 4.53 W x 0.99 D in | Wayfair T20401 Hydor Slim Heaters helps your fish live a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of 5 to... ... more | go to store |
 | Midwest Homes For Pets Hydor Aquarium Heater in Black | 3.35 H x 4.53 W x 0.99 D in | Wayfair T20401 Hydor Slim Heaters helps your fish live a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of 5 to... ... more | go to store |
 | Pre Set Quartz Glass Aquarium Heater, 200 Watts, 200 W / 8.66 IN Submersible Pre Set Quartz Glass Aquarium Heater safe for Freshwater and Saltwater tanks. Pre Set and Calibrated thermostat to 78 degree with no Temperature adjustment needed. LED Power Indicator Light showing operation: Red-Heating and... ... more | go to store |
 | 5/8" hose External In-line Aquarium Heater, 300 Watts, 300 W / 2.96 IN Eth is a heater for aquariums also suitable for sump collection tanks and external filters for vertical positioning only. Accurate thanks to the electronic temperature control, it is specially designed to guarantee high resistance and avoid the risk of... ... more | go to store |
 | Pre Set Quartz Glass Aquarium Heater, 50 Watts, 50 W / 5.11 IN Submersible Pre Set Quartz Glass Aquarium Heater safe for Freshwater and Saltwater tanks. Pre Set and Calibrated thermostat to 78 degree with no Temperature adjustment needed. LED Power Indicator Light showing operation: Red-Heating and... ... more | go to store |
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