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Plaster is 6 years old And absolutely sure as I saw them toss it in and didn't think it wouldn't dissolve, though it was on the steps I did check all my chem levels. pH was a bit high, 7.9, TA was low at 40, everything else was within normal range. I've been having a hard time keeping TA where...

Also, during the initial build you could see areas that were darker, ie the gunite was showing through. I felt this was a problem but my builder assured me it was normal. For the record, white plaster should be white and opaque, and gunite should not be seen through a thin layer, right?

Someone threw some cal hypo into the pool (gunite/white plaster/chlorine 29k gallons) and it ate away some plaster bad is this? I wasn’t planning on replastetring until next year. Does this change my timeline I am generally on top of my pool chemistries.