Originally Posted By: small pond
Originally Posted By: Cecil Baird1
It will prevent any stagnant water but not sure if you will really have any with only four feet of water and flow through.

There's a 1/8th hp surface aerator available that might be the ticket.
Who sells it? The smallest surface aerator I've seen is 1/4 horse power


My bad I think it was 1/4th horsepower. Cheapest I've seen it was for about $800.00. But it's low amps. Here's a video of the model in action. I see it's on Amazon and might be on Ebay. Model 1400 jfl pond fountain.

http://www.youtube.com/watch?v=li7ma8hYwio

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.