Hello, I'm wanting to double-check what kind of chemicals I should add to my pool to bring it in balance. Here are my current readings:
They may have gotten a little out of whack because of some recent event in my pool:
1) I recently replumbed it, which took several days, causing it to sit stagnant for too long
2) I wound up SLAMming it as a result, because of visible algae
3) While topping off the pool, as the water was getting low, I accidentally left the hose on for about 4 hours which caused water waste, and some pool water wound up getting replaced with tap water in the process, as the pool was overflowing.
So I can see my CYA dropped a bit, my PH went up, and the alkalinity also went up. Normally my PH rides to low, and I'm always adding washing soda, but now the PH is on the high side.
Looking at pool math, it says that I should lower my alkalinity by adding acid and washing soda both, but it doesn't tell my how much acid to add. Well it does say to add enough to lower the PH to 7.0 to 7.2, but how can they make a blanket statement to that? Shouldn't somebody with slightly high alkalinity follow a different course than somebody with massively high alkalinity? Also, what ill effect does high alkalinity cause to my pool, by the way?
Also, I've just installed a SWG, but haven't put it into service yet, but I think I should raise my CYA first. Do you think I should shoot for 80? I'm in a hot sunny climate (Austin, TX). I still have some chlorine pucks, so maybe I'll put some in the skimmer to boost the CYA. From one of my other threads: