Hello ffmd212, I'm returning to the saltwater world after taking a few years off from owning a 100 gal
salt tank. I currently have a 33 gal
hex. I use an additional Hydor Koralia 2 pump which shoots from the top downward off the hex walls in a spiral. So far, I haven't had any problems with the Koralia pump. I like the pump because it can be used with standard hang-on or magnetic. The magnetic backing allows me to place the pump anywhere I choose.