Ok so have read some threads about ponds and pumps for ducks. We have a small pond that we dug out last summer for our 2 ducks. We just went to Menard's and got a pump and filter....what a disaster. I would have to clean the filter out every couple of days because the pump would start running extremely slow. We have a friend who owns a landscaping business and has a (big) pond himself for fish. He told me to just get a air pump, it's cheaper to run and it won't get clogged. Everything I have researched and looked up on ponds for ducks has said nothing about air pumps, why I wonder? So my question is could I use just an air pump in my duck pond and maybe get a vacuum to vacuum out the bottom every once in a while?