It is a needle wheel but I would imagine this skimmer would cost far too much to make it feasible. This is a custom made model by GEO $$$$$ I would rather run my beckett then wait for 3 years in save electrical costs to add up.
That is an impressive cloud of bubbles though 
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Rich
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I am free, no matter what rules surround me. If I find them tolerable, I tolerate them; if I find them too obnoxious, I break them. I am free because I know that I alone am morally responsible for everything I do.
Robert A. Heinlein
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