Interesting product. IMHO huge price tag ($6,000). I agree with you Bennie, I think that you can build something similar for much less money. Some sort of trash pump pulling in surface water, dumping it into a filtration box and then returning the water to the pond. You probably could create some form of aeration effect with the return water. Seems to me like the two maintenance issues would be (1) the intake or hose system clogging and (2) the need to empty the filter media.
Keep us posted on what you come up with.
