we have a 37 gallon tank and the last week and a half the bubble tip anemony which is behaving strange he is retracting into it self and last night it balloned on the inside of one side of it and my black spicked erchin has lost a lot of spickes last night. We did a water change on friday to see if that would help and it didnt there was a introduction of a leather coral into the tank on tuesday of last week has this upset the tank ect. We have had the water loocked at from the dealer and it is good and thay have no idear why it is behaving in this way. can you help sorry for the spelling !