Perfect for smaller aquariums, this submersible heater requires no adjustments. The electronic thermostat automatically maintains the water temperature at 78°F (±2°). Reduces the risk of overheating, prolonging the life of the heater. Indicator light is red when the water is heating, green when water is at the proper temperature. Made of heat and shock resistant borosilicate glass. 6 foot cord. UL-Listed.
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