Themuleous said:Zed - Bingo http://www.ta-aquaculture.co.uk/Water_recirculation.htm Im gonna order a 16mm one. Sam
Ed Seeley said:If you cant get one then another option is to get a 25mm straight connector and then add your own 4mm join by drilling a small hole and adding one of these 4mm Airline valves. Seal it with some araldite to make sure it doesn't leak.