Hi, my CYA is 160 due to trichlor tabs the previous owners used to use, and I would like to lower it. The pool is 18000 gallons or so, so I don't really want to drain half of it and refill.
Will evaporation with subsequent refilling eventually do it? Does CYA even evaporate, or does it remain concentrated in the pool? And if it does evaporate, will this take way too long to lower CYA? Any other ideas on lowering CYA? Thanks