The plastic ring in the shape of an O on the nipple(that goes in the female end of the double tap connector is where my link was. On the center of the double tap connection![]()
Dah - I get it now. I put a piece of tissue around that connection and that's not where it is leaking. It is just below the coupling where the eheim tubing attaches. I talked to the supplier (DFS) and they said they would get in touch with Eheim and get a replacement part.
Thanks for your help!