Tetra HT300 Heater Adjustable
By Tetra
Easy-to-use submersible heaters automatically maintain aquarium water temperature at 78°F (±2°). Tetra HT Submersible Aquarium Heaters feature an electronic thermostat that adjusts heat output to maintain constant water temperature.
Preset heater technology reduces the risk of overheating and prolongs the life of the heater. Indicator light allows simple visual confirmation of heater operation. Units display a red light when the water is heating and a green light when water is at the proper temperature.
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