Have you thought about putting a powerhead on each tank where the water leaves blowing in the opposite direction. If you put them on a wave timer blowing against the incoming current, it could generate a surge type current when the powerhead shuts off. OF course it cant be to powerful that it doesnt let water leave the tank, and a way to make sure the one end doesnt overfill would be a good idea, but it could work.
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WARNING: This product has been found hazardous to morons in laboratory tests.
Current Tank Info: 29 gallon, 15g sump, Mag 9.5 return, 250W 14K MH, 65W Actinic PC.
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