Great posts' as always !! FC is not holding at all...received my CYA reagent yesterday and saw that I had NO CYA in the water (that's assuming the sequesterant wasn't eating it)..nonetheless, I added enough stabilizer to achieve a 40PPM rate...I'll re-check tomorrow...

It's been sunny and HOT here in the Poconos so I'm finding it difficult to get any reading of CL..Being my impatient self, i added a gallon of 6% into 7600 gallons....an hour later, FC was 6 BUT I had a 1 on the CC side :< 3 hours later, FC was 0 and CC was.5......PH was 7.2...(and I did start to see the dreaded very light green tint to the water....which now has disappeared)..

Szambino, Is it THAT critical that the PH hold AT 7.0 ??

Marie, again, what can I say.....Thanks so much..