I have a few ampmasters - 6 I think, and for all the hobble about seals on some of the RC threads I havent experienced the same.
That being said I just switched to two of their 1hp pumps which are very loud but do about 3 times the water volume of the ampmaster.
Just ensure you dont take the piping size down until the last plumbing fixture.
try dolphinpumps.com, think thats it.
Wendell
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