Think they are supposed to be OK, but I haven't used one myself. Other options that come to mind are Ocean Runner pumps, and the Rio Hyperflow line (I run a 32HF on my sump and it must be something like 1500gph at 6' head, at 0' it's actually 2000gph).
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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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