Should I think about trying to run it all winter maybe half as much gpm. It should be easy enough to design the pump/pipe to do so. The pond is in sand and in the water table so pumping won't flow out of pond or change the water levels.....or maybe slowly pumping out of the pond and let ground water replace pond water and that might get ammonia out better. The difference would be 2 feet in water level though I would think. It will change kind of like Dwight's levels change in comparison to the creek that flows by his pond.
Will pumping water in to the small pond get rid of ammonia and nitrates through sand????
