For some apparent reason can?t get my ph above 7.8 it drops as far as 7.65 and goes no higher than 7.8 my appartment is on the ground floor towards the back so really no air coming in with the windows open I put a tube to my skimmer and have it out on the window still nothing don?t wanna dose kalk here to many stories I was thiking getting a co2 scrubber what do u Guys think any help will be appreciated