I keep my 90g cichlid tank at roughly 80-82 degrees in the winter. for some reason the water evaporates so fast that 2-3 times a week im adding water to keep the 2 HOB filter's output noise down. is this normal?? does anyone else have this problem? 
killerfish;2830490; said:depends on how we'll coverd the tank is i have a tub sealed with the lid it came with and i don't notice any change in the water level all week then i do a water change
I have a 10 gallon thats coverd by a mesh screen men't for reptile cages and i lose about an inch of water every two days to evaporation