Hi Telford, I agree with Mark, you should be able to get some kind of power head in the tank with a couple of slight modifications. But if not you could look at setting up a closed loop system using a SCWD water changer as untamed described... You could probably get some wicked turbulence going in a circular tank. If you're ever in Vernon and want to look at my setup, just let me know.
HTH
Kevin
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