If it were my pool, I would shut off the chlorinator, switch to bleach or liquid chlorine (same thing, bleach is 6% sodium hypochlorite, liquid chlorine is 10-12%), and aerate the water by either tossing in a group of rowdy kids, turning your return eyes upward so they ripple the water surface, and/or adding a fountain. This will stop the CYA rise, stop the pH plunge, and raise your pH to a little higher level.

If you continue to use the chlorinator, it won't be long before you have CYA levels so high that you can't maintain high enough chlorine levels to keep it clear. I'd hate to see you fighting algae all summer when it can be prevented!!



Janet