Recently moved into the house, just now getting into the pool maintenance (service has been taking care of it to this point). There are (confirmed via Vitamin C test) iron stains on the sides and bottom of the pool. Water supply is fine, I suspect that the iron came from the galvanized hardware someone used on the Polaris. Had the Polaris rebuilt properly, and am about to start the AA treatment. Removed the chorine pucks from the skimmer basket (they won't be replaced) 3 days ago.
Tested the water thoroughly before starting, and I'm a bit confused by the current pool chemistry so I'd like more experienced eyes to backstop me:
pH 8.2+ (off the top of the scale)
My confusion is with the pH and CYA level. WTH could be causing the elevated pH and will I probably need to add MA in addition to the AA? And why would the CYA be so low when chorine tablets are being used? I was shocked when my chlorine levels dropped to zero in 72 hours.
Using a TF-100 test kit and tested everything 3 times. (I'm new with pool testing but have extensive experience with testing procedures maintaining marine aquariums - my technique still seems adequate.)