I can get Kem-Tek CYA and Clorox Polyquat 60 at the local Lowes for a kinda reasonable price. We already have several jugs of 8.25% bleach. I was thinking I'd get pool clean with bleach, then bring the cya up to 40 or so with the Kem-Tek, then, after that see what I need to do with the pH. Will it be a big problem if the pH is too high for another week or 2? How much CYA should I add to 4500 gallons at a time? I think I read wait a week between doses.