Hey guys. This week about a day after a 50% water change both my green terror and jack dempsy started acting bizarre. They have been rubbing there body against the pebbles and wood every now and again. The only thing I've done differently to other water changes is changed brands of the additive used to remove chlorine and all that. Is there anything I could do to stop them or is this territorial behavior? The firemouth in with them seems fine. It's a 55 gal growout tank and the fish are about 1 inch. Any help appreciated
