Now im confused. Every spring ive open to a couldy milky pool. Then if i ever let my FC drop to near 0 I would wake up to a cloudy pool. I assumed my high CYA as been allowing algae blooms to go on for years. Now you want me to drop my FC. I still cant maintain my FC overnight. I dont want to stop shocking until thats accomplished unless you recommend it. Ive spent alot of money on bleach so far. Its very hot now so I cant drain now. i plan on doing it this fall. Thank you very much for replying. By the way my wife will have to suck it up since ive gone this far