I just moved my tank about a week ago. Shortly after several probelms have begun to occur. Please give me any advice on these problems. 1. My Lawnmower Blenny dissappeared. I assume he is dead but can find no remains. 2. Several crabs and snails apparently died. Empty shells. 3. I'm having an outbreak of hair algae(I think. I never had it before) 4. I am also having a diatom bloom. pH - 7.9 working on bringing it up NH3 = .1 NO2 = 0 NO3 = 0 S/G = 1.027 CA = 450 KH = 100 PO4 = 0??? Copper = 0 I don't know what happened. Especially since my parameters seem ok. Any suggestions on what could be going on? 55G with 4 gal HOB refugium, dual 65W 50/50 CF, 40 W Actinics, Canister filter, HOB Protein Skimmer, 1 additional 660 powerhead. Thanks.