well my 100 gal has a really weird overflow. its actually on the right side but its in the middle of the right side. so when i introduce new fish into the tank i guess they territory has been takin or something and my black eared paroon shark and jardini are both in that lil corner of the over flow cuz they are the newest fish to the tank. IS THERE A WAY I CAN SOME HOW GET THEM TO SWIM IN THE MIDDLE? cuz they literally just swim in small circles around that area.