DO NOT run too much pressure through these they will leak all over your floor as I have just recently had the joy of discovering. I ran one on the return side of my Ocean Clear with an 800gph little giant pump. I had a Hose "T" to the top of the tank to vent the excess pressure and then had the rest running through the FBF it lasted 3 days before the seam on the bottom started leaking all over the floor. Needless to say I would not run this with any significant pressure or you will have a big mess to clean up.