Gday all,My 5'' green aro has developed gill curl on 1 side.It just recently developed it. i do weekly water changes and have just added a powerhead to the tank. Its diet is prawns.Will it be ok? is there anything else i can do 2 help it? its in a growout tank at the moment which is 2' x18'' with 3 peacock bass.Any help would be greatly appreciated.thanx