well, we ran our pump and it is working very well so far. It is a 300 gal/min pump that we have a 6" discharge pipe connected too. It fills the 6" pipe entirely to the top and seems like it is pumping way more than 300 gal/min. Is this possible for a pump to pump more water than it is rated at? We have several irrigation wells around here that we irrigate crops with and they will pump about 800 gal/min through a 6" pipe. About how many gal/min will a 6" pipe supply? It has downward slope into the pond from where it is being pumped.