http://www.reefcentral.com/forums/sh....php?t=1869000
Suggests in there another possibility is that there is calcium buildup inside the impeller or the shaft, impeding it's ability to shift upwards when spinning in the reverse direction. In that case a vinegar bath should fix you up..
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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