http://www.123aquatics.co.uk is a really competively priced shop being cheaper than a shop we all know well for the Eheim Professional 3e 2078 filters that I bought 2off today. The owner Mark is a really genuine guy to talk to and assures me that the stock shown on his website is 1/3 off what he has. He also said he can source anything we would need. A pleasure to deal with. Regards Colin.