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 | Submersible Aquarium Heater, 50 Watts The Aqueon Submersible Aquarium Heater is the perfect candidate for the job. ... more | go to store at Petco.com |
| Best Seller  | HT10 Submersible Aquarium Heater, 50 Watts Tetra HT line of heaters are easy-to-use and work in aquariums ranging from 2 to 55 gallons. The heaters have electronic thermostats that automatically adjust heat output to keep water at a constant 78 degrees F. All HT heaters have indicator lights to... ... 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 |
| 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 |
 | This heater easily maintains healthy water temperature within a 1° accuracy, and can be set anywhere between 68 ℉ and 89 ℉, by using the red control knob. Our Cascade Aquarium Heaters are factory set to 76 ℉, and are safe for either freshwater or... ... more | 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 |
 | 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 | FREE shipping 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 |
 | Pro 150 Submersible Aquarium Heater, 150 Watts, 150 W / 13.5 IN An underwater oasis is not complete without the Aqueon Pro 150 Submersible Aquarium Heater! This aquatic essential comes packed with features that will make your fishy friends feel like they're swimming in a tropical paradise. ... more | go to store |
 | Submersible Aquarium Heater, 100 Watts The Aqueon Submersible Aquarium Heater is the perfect candidate for the job. ... more | go to store |
 | Pro 300 Submersible Aquarium Heater, 300 Watts Over here, we've got the Aqueon Pro 300 Submersible Aquarium Heater - the ultimate gadget for your fishy friends! Get ready to experience precise temperature control like never before with this baby. Here's what makes it so special: ... more | go to store |
 | Scuba Contactless Submersible Heater, 50 Watts, 15 GAL NNOVATIVE heater range equipped with patented "contactless" temperature electronic control. The EASIEST and MOST IMMEDIATE way to set the temperature of the heater. FREE APP to record and precisely set the water temperature as needed. ... 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 |
 | Pro 50 Submersible Aquarium Heater, 50 W / 8.5 IN The Aqueon Pro 50 Submersible Aquarium Heater is a precise temperature control feature that allows you to set the temperature to within +/- 1 degree F. It has an adjustable temperature range between 68-88 degrees F, making it perfect for all types of... ... more | go to store |
 | Submersible Aquarium Heater, 200 Watts The Aqueon Submersible Aquarium Heater is the perfect candidate for the job. ... more | go to store |
 | Submersible Aquarium Heater, 150 Watts The Aqueon Submersible Aquarium Heater is the perfect candidate for the job. ... more | go to store |
 | Submersible Aquarium Heater, 300 Watts The Aqueon Submersible Aquarium Heater is the perfect candidate for the job. ... more | go to store |
 | Pro 200 Submersible Aquarium Heater, 200 W / 13.5 IN Today, we're introducing the Aqueon Pro 200 Submersible Aquarium Heater, the ultimate tool for ensuring your fishy friends are living their best lives! This heater is packed with features that'll make your aquarium maintenance a breeze. ... 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, 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, 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 |
 | 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 |
 | M50 Submersible Heater, 50 W, up to 15 US Gal (50 L), .6 LB Today, we're introducing the Fluval M50 Submersible Heater! This little guy is an absolute powerhouse, providing exceptional performance and unsurpassed reliability for your aquarium. Plus, it's got something special up its sleeve: exclusive mirror... ... more | go to store |
 | Scuba Contactless Submersible Heater, 300 Watts, 90 GAL NNOVATIVE heater range equipped with patented "contactless" temperature electronic control. The EASIEST and MOST IMMEDIATE way to set the temperature of the heater. FREE APP to record and precisely set the water temperature as needed. ... more | go to store |
 | Scuba Contactless Submersible Heater, 100 Watts, 35 GAL NNOVATIVE heater range equipped with patented "contactless" temperature electronic control. The EASIEST and MOST IMMEDIATE way to set the temperature of the heater. FREE APP to record and precisely set the water temperature as needed. ... more | go to store |
 | Scuba Contactless Submersible Heater, 200 Watts, 60 GAL NNOVATIVE heater range equipped with patented "contactless" temperature electronic control. The EASIEST and MOST IMMEDIATE way to set the temperature of the heater. FREE APP to record and precisely set the water temperature as needed. ... 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 |
 | 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, 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, 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 easily maintains healthy water temperature within a 1° accuracy, and can be set anywhere between 68 ℉ and 89 ℉, by using the red control knob. Our Cascade Aquarium Heaters are factory set to 76 ℉, and are safe for either freshwater or... ... more | FREE shipping go to store |
 | This heater easily maintains healthy water temperature within a 1° accuracy, and can be set anywhere between 68 ℉ and 89 ℉, by using the red control knob. Our Cascade Aquarium Heaters are factory set to 76 ℉, and are safe for either freshwater or... ... more | FREE shipping 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 |
 | This aquarium heater is preset to maintain water at 77 ℉. Although this factory temperature setting cannot be adjusted, it does meet the ideal temperature range for most aquatic environments. This heater is designed for both plastic and glass tanks,... ... more | go to store |
 | This heater easily maintains healthy water temperature within a 1° accuracy, and can be set anywhere between 68 ℉ and 89 ℉, by using the red control knob. Our Cascade Aquarium Heaters are factory set to 76 ℉, and are safe for either freshwater or... ... more | go to store |
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