Duck pond filter?

[Duckmom239]

I have a 220 gallon pool with a Skippy bio-filter that we made (with the kit) for my 8 ducks. It seems to work fine, but it did turn green through the heat of the summer, so this year I plan to add a second bog filter to it to eat up the nutrients. The trouble is finding a pump that won't clog in a months time. As far a feathers, I just bought a pool net and I can scoop out feathers and leaves with it just fine. Every couple weeks I might pump it out and start fresh, but my goal is to have enough filtration that I don't have to do it more than once a month or so.

This was last summer, but now it's all mud. I have to do some major renovations to it this spring. Also going to change out the rocks around it.
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Did you ever come up with another solution? We are deciding whether we want to go the skippy route, but we are in Florida and the heat gets pretty intense