yes I am looking to buy from a guy with a tank, tank 600 gallons, No leaks as seen in picks, its running fully, I just don't know price as used for one of these so much. He is making it out to be like 500.00 new wants 300.00 for it and I dont think thats too fair for a used pump, trying to figure out GPH also so if I decide to buy a pump I can kinda match it or get a little more. Its a large tank and I want good water flow, 2 - 2inch drains in over flows and 2 -1.5inch outlets for water flow. So I wanted to see if I could track down the full retail price and go from that point. any advice welcome