i'm going to have a 40g fuge next to a 40g sump built by the awsome sean man. thinking of having the water leven in the fuge higher then the water level in one of the sump chainbers <chainber1>. 3 chainbers all together. overflow box on fuge draining to chainber one. display draining into chainber 3 leaving chainber 2 open- middle chainber.
heres the question, i was thinking of using the center chainber for the return. is it true that the water level in chainber 2 will rise and fall from evaporation enableing me to put a ato sensor in chainber 2?
heres the question, i was thinking of using the center chainber for the return. is it true that the water level in chainber 2 will rise and fall from evaporation enableing me to put a ato sensor in chainber 2?


