I recently switched from dosing to using a calcium reactor. I'm struggling with my pH level it goes down to 7.7 in the morning when the lights come on it's slowly goes up to 8 but that's as far as it will go. I have attached a quarter inch vinyl tubing line to my protein skimmer going outside a window, I'm going to install fans over my Sump and tank. And I was hoping someone could tell me if there's another way to raise my pH. I tried putting kalkwasser in my auto top off water, and it raises my KH too high. I saw some thread of dosing lime water? Can anyone else give me some suggestions. I have an SPS dominant tank and I know they like a pH of 8.3 to 8.4 best.