New pool owner here, first time closing by myself. You guys have been great and I bought the kit early summer and really have had a trouble-free pool all summer! It stays clear, and I've added baking soda and used the tri-chlor tabs all summer - and that was it.
Now as I am closing, my CYA is suddenly high. I've read all about that the only solution to lowering the CYA is to dump and re-fill. Have done that twice, but obviously not enough, as my CYA remains at 90.
Here are my readings yesterday and today: PH 7.6-7.7, FC 11, CC 0, TA 100 and CYA 90.
What's the risk of closing at those levels? I must close in next two days as it's going to start raining and get very cold.
THANKS for all your help.