Have you switched brands of salt? Have you changed anything from your usual schedual? If it were me I think I would toss out all their food and buy new fresh food. Mabey something you have is tainted with something. Any kids in your house that may have added a little pinesol or dish soap? Its happened to me before when I was doing FW tanks.
Just a thought in case you have exhausted other possible causes. I would run a lot of carbon for a while also.
Jay
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60 Gal Acrylic, 30 Gal Acrylic, 55 Gal Glass.
Remora skimmers, 440 Watts VHO URI's. Mag canister for carbon. 90 Pounds liverock, 100 pounds live sand DSB, Flame Angel, Coral Beauty, Clown Percula, Royal Gramma, Domino Damsel. Pulsing Xenia, Devils Hand Leather, Frogspawns, Torches, Hammers, Fox Corals, Gorgonias, Various Zoanuthus, Favietes, Toxic Green Star Polyps. Candy Cane corals, Purple Indica. |