Question:
Has anyone ever used a centrifugal water filter?.... I have green water in surspension in my pond, and when I take a sample of water and I leave it in a glass jar over night and it settles leaving a sediment on the bottom and the water clear as glass but when I touch the sediment it rises like smoke causing the water to go green again.

I have tried sand filters, brushes, matting and anything and everything else that I can think of..... any ideas? A centrifugal filter might work..

Answer: Actually it was manually word wrapping what you had to say that just about killed me, but you brought up some good points.

Aeration in the filter a definite GOOD IDEA. Reg, sent me some pictures via e-mail, very cool, huge filter, maybe not enough flow considering the size of the total pond.

I, too, suggested a bacteria/enzyme product. With that size pond he should be able to get it bulk rate. :o) He also has 700 koi over 2 ft. long. I suggested, perhaps getting rid of a few hundred. Not sure what he'll think of that

An impeller will definitely break up the solids. However, a retro-fit bottom drain does NOT have to be used with a suction pump.

I have four 4-inch retro-fit bottom drains which work by gravity siphon alone. They move water from my large ponds to the settling tank. The water moves from the settling tank through the mechanical/bio filter, then through the veggie filter, and finally to the pump intakes. My retro-fit bottom drains are over 65 feet from the pump intakes.