I wished I could help but me and ATO have not had a very good relationship. Currently I am not using one because I have had 2 that I could not trust. I get away with it because my basement sump only loses about a half inch or less of water a day. I have enough sump space to go over a week before my return could run dry. Of course it affects salinity and my skimmer but I check it at least every other day so its ok.My pump arrived yesterday! Can. Not. Wait to get it all together with the chiller. Now if only I could make up my mind on powerheads/wavemakers and an ATO.
Jebao/Jecod Cp-25 or 2 pp8 4th gens. Thoughts?