Ok I've been been doing BBB since 5/12 and everything has been going fine and crystal clear until today when i took the solar cover off. The solar cover was on for 18hrs and i pulled it off at 4pm today to a cloudy pool. My numbers have been as follows
20000 gal IG vinyl, water temp holding between 78-81
I've been testing every evening
FC has been between 7-9 ( it did go down to 5 after heavy use on 5/23 and i brought it back up to 9)
FC dropped from 6.5 to 4.5 in last 24hrs. CC remaining at .5
I shocked tonight to bring it up to 20. I've been adding chlorine when it gets to 7.0 every 2 days. Should i start keeping it at 9 and then adding more? There has been a TON of pollen in the air (so much so that EVERYTHING is coated in yellow) and the cottonwood trees have been been leaving floaters on everything. Not sure if this is related but i need to nip this in the bud. Thanks for any help.