I do have tempered glass panels over the top of the tank, which absorbs a lot of heat on sunny days. On dark days, I cover the glass with Styrofoam and a heavy tarp to reduce heat loss.andrejnr;774208; said:Well apart from a solar panel the only other thing I can think of that might save you electricity in heating wold be some sort of greenhouse bilt aroud the aquarium.
This is a photo of my Flowerhorn fry at nearly two years of age. About 300 fish were shipped around the US to various fish dealers and other interested persons... They go by the name Cichlasoma Griffini.