Tetra Submersible Aquarium Tank Heater, 2-15 Gallon, 50-Watts

Tetra Submersible Aquarium Tank Heater, 2-15 Gallon, 50-Watt Keep your fish friends comfortable in this submersible aquarium heater. Designed for 2- to 15-gal tanks, the Tetra Heater 5-15 provides a steady 78-degree water temperature automatically. Just submerge the heater in the water, attach it to the side of the aquarium with the convenient suction cups and let it get to work heating the water. This fish tank heater includes a built-in thermostat that causes it to turn on when the temperature goes below 78 degrees, eliminating the need for adjustments. The red light lets you know when it's heating the water, so you can put it in and walk away as it does its job. The 50W Tetra Heater 5-15 features a shock-resistant glass tube and silicon carbide crystals that facilitate heat transfer and distribution. Ensure the water stays at an optimal temperature with this easy-to-use submersible aquarium heater.