I don't have specific information, and am continuing to assess if I have a leak somewhere. I have about 1.5' from the sump to the pump intake. If the pump is not creating bubbles there are bubbles forming when the water enters the sump from the returns. I have two PVC return pipes connected to unions in the sump (the sump came that way), and nothing but water in that section of the sump (i.e. no bioballs, filter, etc). When the water enters the sump it seems to create quite a bit of foam and bubbles (although perhaps the bubbles are just coming along for the ride from the tank). I have to continue to work to diagnose where the bubbles are coming from. My 1.5" PVC pipe runs from my pump outlet to a T and along the back of the tank, where I further t-off into 6 individual loc-line sections (I eventually want to reconfigure this, but it works for now). Then the water returns to the sump via 2 durso standpipes (2 back returns) and back to the pump. I've pulled the durso's about as high as they will go. Any way to easily diagnose an air leak in the PVC run?
RK1