Since I got my test kit and testing PH/CL daily and weekly for other things I notice my PH goes up from 7.5 to 7.8 in about a week - then i add muratic acid to lower and then it rises. Thoughts?
Numbers from 06/11
FC 3.5 (SWG on 40% running on low speed for 6 hours a day - gonna bump it to 50% as I want to stay in the 4-5 range)
Is it normal for PH to rise that fast?