Ah !!!! Joe it came with two 75 gal wet dry's and two Mak 5 pumps each rated at 1690 gph each wet dry looks to have about 30 gallons of bio .I think in time here i will change out the two Mak 5's and run one pent Air pool pump more efficient and mot to mention Waaay more flow .Also been looking at a sand filtration from Evolution pond products they also have a new piece of equipment that is a plastic molded one piece unit called the CETUS SIEVE it works super simply off of gravitational feed with a bowed perferated piece of metal so all the poop slides down into a little tray you can just wipe out supposed to pre filter down to a micron level i just can't remember right now but pretty slick.A pretty good alternitive to back washing a sand filter all the time but kinda pricey too new tecnolagy will cost ya always.So thats the way i will keep it and ad one of the two from evolution
