Quote Originally Posted by jtran69 View Post
Sunday night at 11 p.m..
fc= 15, cya =190. I added 1/3 gallon of bleach.
Are you still fighting algae or is your pool clear?
If it is clear, you can maintain your fc about where it is till you close. If it is not you still have to shock up to 25-30 to clear it, and should do so before you close.

The only benefit to closing with algae is over the next several months an algae infested pool will consume CYA, but you will have a huge mess to clean up, taking lots of chlorine. But if you cannot drain and refill because of water restrictions, your choices are limited to a high CYA pool, or an algae "science project".