I am building my first sump and need help selecting a pump. The tank is a 65 gal and 20L three baffle sump. The overflow box is an eshopps pf-800. I need help selecting a pump that would best match that flow. It will be pumping about 5 feet. I had a mag drive pump unknown on model that was given to me by a friend, but that had way to much flow. Even with the valve practically closed it drained the sump in a matter of minutes with th overflow wide open. I have 1" plumbing both ways. Thanks.