I test my chlorine and pH levels daily and my pH still gets over 8+ every day with my new plaster (still adding MA daily). I test for everything else weekly. I've noticed that my CYA seems to be dropping and tested at 50 last night. Also noticed that my FC was down to 3.5 from the 5 I live to keep it at. I turned up the percentage on my SWG but should I add some CYA? I did have to drain off a couple inches of water from the pool last week after a particularly heavy rain put my water level above the skimmer. My pool gets full sun all day too. I must admit that thinking I might have to add CYA kind of scares me as I know so many people have the opposite problem of too much. If I do have to add, can someone give this newbie step by step "for dummies" instructions on how to do it? Any particular brand of CYA or anything to check so I know I'm getting the right stuff? I know I've read something about using a sock but if someone could actually spell it out it would be appreciated.
PH 8+ before adding MA