Asked by: Invencion Evranovpets fish and aquariums
How many watts does an aquarium heater use per gallon?
In this regard, how many watts do I need for my aquarium heater?
Most aquarium heaters range from 25 watts to 300 watts. Smaller aquariums require smaller heaters. A 10-gallon tank, for example, will typically need a 25- to 75-watt heater, while a 75-gallon tank will require 250 to 300 watts. Larger tanks may require multiple heaters.
Likewise, will a 50 watt heater work for a 20 gallon tank?
Yes you can have a 50 watt heater in a 20 gallon. Another thing is since a betta tank should be kept at 78-80 you might overwork the heater. Normally larger is better so that you don't over work the heater.
A 40 gallon fish tank will need at least a 120-watt heater if the room it is kept in is 5 degrees cooler than your aquarium. If the room is 10 degrees cooler then a 40 gallon tank will need a 200-watt heater.