It is a re-built Thomas compressor so I think you would do better purchasing a new compressor with warranty for about the same $$. The diffusers look like they are made out of "soaker hose" material and easily clog and become worthless. If you are looking for something economical I recomend checking out one of Pond Boss's supporters, Ted Lea
www.cleanponds.com and check out his economy systems. Then you will know what you are getting and have someone you can be in direct contact with instead of some "mystery" ebay dealer from "somewhere" in the USA...
