OK, upon request, am reluctantly posting a couple pics of my pond. Nothing to look at, that's for sure, compared to a couple others here. We inherited the pond with the house we bought a few years ago. The previous owner removed his Koi and goldfish, but some babies survived, so now we have about 12 - 15 fish, some close to a foot in length. They winter in the pond under a rock shelf, and don't have to feed them from Nov to Apr. We keep the pump and filter going the whole time, though.
Have this filter and pump. The filter box (says screenex on top) is about 3 ft wide, and this is the rather large pump in the sump portion of the pond. No idea what they are, but they just keep going,... no maintenance.
