I just got a test kit for calcium (aquarium pharm. - no salifert here) and the levels are up around 700 in my 37g!!! I have 2 skunk clowns, a royal gramma, an eibli angel, 2 cleaner shrimp, 1 peppermint, 1 serpent star, 10-15 snails, 10 hermits, some mushrooms, green tree coral, toadstool, and...