Alright maybe I'll let the pH slide for now since all other water params are perfect. I was shocked to be honest when I tested the water we had treated to put in the aquarium. I didn't know "city water" could be so out of whack. The Cardinals seem to be alright although I saw what may be an ick spot on the smallest one today, he's swimming alone too. Guess it's time for the hospital tank. Thanks for the advice though, it is helpful.