I take it you mean a 5' tank. It should be fine, flow drops substantially after 4ft so I don't see much flow bouncing off the other side and stirring up sand. I think you will be fine. I sent out a lot of 6060's today and I belive thatboth Preuss Animal House in Mi and Goochs Corals in Green Bay Wisconsin have them- it might be easier to check them out locally. Also, I think both shops have some Stream in use. You also aren't far from Premium Aquatics.