Temperature fluctuations cause stress in your corals and fish, and the fluctuations often go unnoticed by the aquarist.

A minimum of 3-5 Watts per gallon is recommended for keeping your aquarium at optimal temperatures. Aquarists with larger tanks should use more than one heater. The use of multiple heaters offers the advantage of maintaining heating capacity in the unlikely event that your heater has a problem.

Approximate Heater Guide

The heater guide shows us approximate wattage depending on the size of tank and temperature difference between water of tank and room. With this new chart it allows you to achieve the desired temperature for that size tank.