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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 | go to store |
| Best Seller  | 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 |
 | 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 |
 | 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 |
 | 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 |
 | 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 |
 | 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 |
 | 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 |
 | Pre Set Quartz Glass Aquarium Heater, 25 Watts, 25 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 |
 | Pre Set Quartz Glass Aquarium Heater, 100 Watts, 100 W / 5.9 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 |
 | This heater is perfect for small tropical fish living in glass or acrylic desktop aquariums that are between 1 and 10 gallons. No need to worry about complicated installation - this little guy is fully submersible and comes with suction cups that allow... ... more | go to store |
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