I recently had a problem with the GX-6000 pump that came with the Euro Reef Skimmer. Euro Reef has Upgraded me at no cost with a refund of the upgrade fee that is on its way. The Euro Reef product line is well made, has very good customer support (talk to Chip), and the skimmer im using is extrememly proficient. Thanks Euro Reef for a Great product and very good customer support.