My husband and I built this pond from below ground up! It took us three summers to build the pond(s) and another summer to build the pump house. There are two small ponds up above & a bog garden! There are seven waterfalls going into the large pond below. The windows light up at night - we have them on a timer. We have approx. 32 Koi in the large pond. The water wheel is made out of an old combine wheel - we welded buckets on it!