Ok. I love this method. It's worked great all summer. Now I closed my pool last week and I'm concerned. It rained like crazy the days prior to my close. I tested everything the day before close and my pH was higher than ever. I've been having to lower it a little here and there all summer but I had a good handle on it. Here are my numbers the day before close. (Last Wednesday)
Fc 20. I got a little carried away
No salt paster pool
I added a quart of algaecide (pro 60) left over from my old pool store chemical says. And 18 oz of acid to knock down the ph and the pool was closed
I pulled the cover back today just to check and to my surprise the ph is now as low as it can read on my test. 6.8? Maybe lower?
Ta looks a little low too but not bad at 60. My fc is now at 13
I'm assuming (Its covered with solid cover with pump on top no rain getting in) that the fc should hold all winter and not much should change over the winter? Did the algaecide change my ph? I dropped a pump in the deep end and ran a hose around to the shallow end and put some borax in hoping to bring the ph up.
Should I add bleach? Am I on the right track? What happened?