I purchased an Eheim pump based off the reccomendations of the forum users on this board as being a good quality unit. I looked locally and all the shops around here did not carry them primairly because they were difficult to deal with. Well I went ahead and got one. When I plugged it up for the first it made a bit of a racket and stopped pumping water. I tapped it I shook it thinking it was an air bubble. Come to find out it was a broken impeller rod. I contacted Eheim about it thinking they would stand behind their product. No luck here guys!! They pushed it back onto the reseller performance-pcs.com saying thay it was probably modified in some manner and it was the reseller's responsibility. I find this very upsetting that a manufacture would have this type of attitude especially to a customer. Eheim claims that their product is made ONLY for aquariums any other use would void warranty. Not that it says anything like that anywhere on their website. Learn the hard way guys. Find a manufacture that stands behind their product EHEIM DOESNT.