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hey i just bought a maxi jet 600 powerhead and after about 3 days it started humming really loud so i took it out.Anybody elses does this?if so did you fix it.
If there isn't any trash in the impeller chamber, you have a defective PH. These are the best inexpensive PH's available IMO. I have some that are 6 years old and still running. Shouldn't be any problem to get it warrantied.