Today my pond is doing well! I put it in a year ago. It is 13 feet long and 8 feet wide, runs 12 to 28 inches deep and holds about 1100 gallons. This pond is in central Florida and our "winter" weather slows plant growth and the water lilies have gone dormant. My yellow bellied slider turtle, "Big Bertha," loves her log. There are about 20 fish in the pond and several frogs. I built the waterfall four months ago. To filter the pond I have a 1250 gph submerged filter and a 2700 gph pump connected to a external canister filter and a waterfall. The sound of the waterfall is very pleasant. I used a 22 inch spillway at the top. I am enjoying it immensely!