First of all I want to say I love this site. I visit often. I found you mid season and started using the BBB method after having no luck with the pool stores. My pool cleaned up nicely!!
My question is this... My CYA got out of control 100+ So should I drain more than the recommend 6 " below the return? For obvious reasons I don't want to drain and refill going into winter. I will wait till spring to do that. I did do a partial drain during the swim season and I don't think it made that much of a differance. I would have to drain 1/2 my pool. But for closing purposes what is best?
I have read the Pool School/ Closing an AG pool. My shock level will be really high. Here are my test results taken 1/2 hour ago.
Any advise would be a great help