Thanks Bruce, I guess its possible... never thought of that. Yes its a new tank. 90 gallon and a 20 gallon fuge. I have 80lbs of dry rock that I cured for almost 6 months then after I put it in the tank I cycled the tank 4.5 months. I added stock slowly after my parameters were all acceptable. Its been 4.5 months and I have 1 clown, 1 sailfin tang, a 6 line wrass and a coral beauty angel, 2 emerald crabs, a Sally lightfoot, 5 bumbel bee snails, 6 zombie snails a serpent star and 2 urchins. 3 peppermint shrimp and a blood shrimp... In my fuge I have an emeral crab, zombie snail and a pepermint shrimp and some cheto I tested everything tonight: 1.025, 78.3°, NH=0, NO3=10MG/L, NO2=0, PO4=0, KH=8.5