Simple fountain total cost less than $25. Take this pump and use half inch PVC pipe.
Dry fit is all you need no glue so easy to clean and service. Install a strait piece of pipe the length you want, wire tie the pump to a broken piece of cinder block, put an end cap on the top of the pipe that you have drilled a series of holes into in the pattern you want, done.
Our small pond really and I mean really needed this. We think all the catfish died, we stocked way too soon. I knew better but the stocking truck was at the feed store and I gave it a shot.
No bodies but no fish coming for food any more and I did see a huge great blue heron down there. So it will be gold fish for the next round after about a week of this running. The video is only 10 seconds but you can see how good it works for a small pond.