Quote Originally Posted by Candyass
Let's assume I'm right and the number is 140, the store tells me that 30-200 is the limit...but online everyone says 30-50. Which is correct?
My 'official' printout from the pool store (Alex - BioGuard) says that 30-200ppm for CYA is ideal. Online I've read that over 50ppm CYA seriously compromises chlorine.



TW