Yes, they work wonders, at least in my experience. You gotta have the right pump for it though, you don't want the flow going thru too fast. Usually 100-150 gph is good. I have it hanging on the back of my 60 fowlr right now, but I'm in the process of doing a 120 reef and I'm going to have it just hanging on the sump as if it were the tank. My sump will be high enough for that. I have the turbo twist 3x.