Tetra Second Nature

This Tetra Submersible Aquarium Heater keeps your aquatic creatures comfortable by maintaining optimal water temperature. Silicon carbide crystals improve heat distribution and transfer in tanks up to 10 gals in size. The strong glass tube is shock resistant and it s easy to use with no adjustments required. The Tetra aquarium heater keeps the temperature at 78 degrees Fahrenheit to aid in the survival of your delicate underwater family. It features indicator lights so you re assured the water is at the right temperature with just a glance.