Hi there new to TFP. I have a 35,000 gallon plaster sand filter pool in Phoenix Arizona. Have had algae for a couple of weeks now, not responding to liquid chlorine. took the water to Leslie's to get tested sure enough CYA level was around 200. They say you can't drain a plaster pool out here until the high temperatures average 86° or below which for us is not until November. (they say with the hot dry air the plaster will crack or whatever) The pool store printed me out a whole bunch of stuff which I don't have in front of me right now, but long story short it had all my levels of everything on it and a couple of alternative recommended courses of action to get rid of the algae for now until we can drain the pool in a couple of months. These pool store recommendations of course involve me purchasing lots of fancy expensive chemicals. I don't mind spending the money if I know it'll work, but I'm skeptical that it will. What do you guys think? Are there ways to get rid of algae in my situation without draining half the pool?