mproctor4
Member
The heater I am currently using came used with my aquarium. I have no idea how old it is and it is making me nervous. I have decided to use this heater for my water changes and get a couple of new ones for the tank. I would like to have 2 smaller heaters in my tank, rather than a single larger one. I am wondering if I have 2 heaters how many watts should each one be? I have a 120 gallon tank with about 20ish gallons in my DYI wet/dry system. My current heater is 300watt and keeps the tank around 80 degrees. Any thoughts?