Oh how I am confused and frustrated. I have bad, horrible low ph (7.5-7.6) and nothing I have attempted seems to come close to remedy. I have tried co2 scrubber (iceCap, maybe bumped it to 7.8 for a few minutes a day) and now I have attempted the line outside, to no avail. It simply will not rise. I don’t know what else to do? Like water? It’s driving me nuts. If I leave the door open all day, it will increase. But I can’t do that. I know it’s atmospheric because I did the aeration test and it went to 8.12 outside, didn’t budge inside. I’m including some pictures, is my line to skimmer in the wrong place? I feel a draw on it, so I know it’s pulling. Totally lost here. It’s amazing how something that should be so simple, so isn’t.