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50 Watt Aquarium Heaters &

75 Watt Aquarium Heaters

The heaters in this category are 50W & 75W and are appropriate for 16 gallon to 25 gallon aquariums in normal circumstances if only one heater is used. Please take a look at our Aquarium Heater Overview Article for a more information.
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Tetra GloFish 50 Watt Submersible Heater Tetra GloFish 50 Watt Submersible Heater

Product Code: RTE78403
The Tetra GloFish 50 Watt 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. Use this 50-watt heater for aquariums up to 10 gallons UL Listed.

Our Price: $13.86
In Stock
Lifegard Aquatics 50 Watt Pre-Set Quartz Glass Aquarium Heater Lifegard Aquatics 50 Watt Pre-Set Quartz Glass Aquarium Heater

Product Code: RRL31559
The Lifegard Aquatics 50 Watt Pre-Set Quartz Glass Aquarium Heater is a submersible heater safe for both freshwater and saltwater tanks from 10 to 20 gallons.

Our Price: $15.09
In Stock
Lifegard Aquatics 50 Watt Adjustable Quartz Glass Aquarium Heater Lifegard Aquatics 50 Watt Adjustable Quartz Glass Aquarium Heater

Product Code: RRL31551
The Lifegard Aquatics 50 Watt Adjustable Quartz Glass Aquarium Heater is a submersible heater safe for both freshwater and saltwater tanks 10 gallons to 20 gallons.

Our Price: $24.12
In Stock
AquaTop 50W Model GH-50 Submersible Heater AquaTop 50W Model GH-50 Submersible Heater

Product Code: RAT01937
The AquaTop 50W Model GH-50 Submersible Heater will maintain a constant and stable temperature. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons.

Our Price: $26.99
(Out of Stock)
Hydor Theo 50 Watt Aquarium Heater Hydor Theo 50 Watt Aquarium Heater

Product Code: RHY19340
Hydor Theo 50 Watt Aquarium Heater is a fully submersible, shatter-proof glass aquarium heater.

Our Price: $27.36
In Stock
Marineland Precision 75 Watt Submersible Heater Marineland Precision 75 Watt Submersible Heater

Product Code: RML90649
The Marineland Precision 75 Watt Submersible Heater is perfect for freshwater and marine aquariums up to 20 gallons. Features a thermal safety switch to prevent heater failure during operation.

Our Price: $27.44
In Stock
AquaTop 75W Model GH-75 Submersible Heater AquaTop 75W Model GH-75 Submersible Heater

Product Code: RAT01938
The AquaTop 75W Model GH-75 Submersible Heater will maintain a constant and stable temperature. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 20 gallons.

Our Price: $27.99
(Out of Stock)
Oase HeatUp 50 Watt Aquarium Heater Oase HeatUp 50 Watt Aquarium Heater

Product Code: RBO33799
The Oase HeatUp 50 Watt Aquarium Heater features uniform temperature level thanks to the patented bi-metal technology. Recommended for tanks up to 15 gallons. 8" long.

Our Price: $29.63
In Stock
Lifegard Aquatics TWO 25 Watt (50 Watts Total) Adjustable Quartz Glass Aquarium Heater PLUS Package Lifegard Aquatics TWO 25 Watt (50 Watts Total) Pre-Set Quartz Glass Aquarium Heater PLUS Package

Product Code: RRL31558-Bundle
This package includes TWO Lifegard Aquatics 25 Watt Pre-Set Quartz Glass Aquarium Heaters for a total of 50 watts. Why would you want TWO 25 watt heaters instead of one 50 watt heater? Using more than one heater is advisable because heaters can fail, and having a second heater in the tank will keep your tank temperature from fluctuating wildly if one heater fails. Heater failure can either be one heater not turning off or one heater not turning on.

Our Price: $29.99
In Stock
Fluval M50 Watt Submersible Heater Fluval M50 Watt Submersible Heater

Product Code: RHG10781
The Fluval M50 Watt Submersible Heater's range provides exceptional performance, unsurpassed reliability and exclusive mirror technology to blend in with its surroundings. For aquariums up to 15 gallons.

Our Price: $31.98
In Stock