A Anthony Non-member Apr 27, 2013 #1 See the white creep on my rock? I don't think it's calcium..... It's just formed over the past week. Should I be concerned?
See the white creep on my rock? I don't think it's calcium..... It's just formed over the past week. Should I be concerned?
luu78 Well-Known Member BRS Member Apr 27, 2013 #2 Looks like sponges, any round holes protruding from the white stuff?
