i have a 24 gallon saltwater aquarium that was set up back in october. on friday i purchased a bubble tip anemone and a sebea clown fish. after getting them home the anemone would not stick to a rock and kept floating to the top of the tank. after anchoring it with a rock, it began to bury itself upside down in the sand. my fiance placed the bag the fish was in into the aquarium for about an hour to acclimate it. by sunday the anemone and clown fish were dead.
i tested the water and the ph is about 7.5, the nitrates about 5 and the ammonia is about 5, and nitrites are 0, but all the other fish are fine. i have 2 other clown fish, a goby, and a scooter blenny. no medications or anything of any sort has been added to the tank. partial water change and vaccuming of the live sand was done about 2-3 days ago. the fish and anemone displayed no signs/symptoms of any kind except that the anemone buried itself upside down into the sand. can anyone tell me what went wrong??