This is a obviously general thread, about how we tinker and improve on our systems, which seems to be nearly daily for me. I love tinkering with my tank. I'll start, today: I am using a MaxiJet 1200- used in fan mode (1300gph) as one of my water movers in my DT. It has a base with 3 suction cups to attach it to the wall on the tank. My Korallias, with the magnet on the outside don't move. But on the Maxijet, I'm always having to clean the back glass its on in the area of the mount, and always having to push to regain the suction on the mount. Occasionally, it comes off, moving 1300gph, blowing frags over, my Crushed Coral snad bed around etc.- I got tired of it. So today, I used the mount that hangs on the top rim instead, the one with 1 suction cup on the bottom. Luckily for me, I had it up about 4 inches from the top anyways. So far, so good.