There was a thread which I can't seem to find where DeltecRules bought a defective BK Mini 200 from Premium Aquatics where the pump had a bad needlewheel impeller and the pump was ratling like crazy. He returned to the vendor back and the vendor sold it around 880 plus shipping and it was bought in a heart beat. I don't get it. Mine is not defective, skimmer is dead quiet, skimmer produces crazy amount of bubbles but I just can't get it to skim dry and I guess it's due to the amount of bioload and skimmer is still available for 900 shipped!!!!