I tested the CYA this morning after dumping 4 lbs last night. I could still barely see some black at 60 but not at all at 50, so I think it fell somewhere in between. CHL looks dead on 3ppm (hth oto test). I'll see what kind of drop I get? Told wife & kids to stay out while I try to dial it in.

After adding the cya I noticed a small decrease in PH? Is that normal? I'm assuming CYA PH is lower then the pool water which caused the drop is that accurate?