We recently rebuilt our old pond to enlarge the size and fix some leaks. Unfortunately, after all of our hard labor, the pond continues to leak near the skimmer box (it’s an old school 2005 skimmer box for the micropond kit). I thought the problem was with the pump because I was losing all of my water in the skimmer box over night. When I removed the pump over night I still found wet soil outside of the skimmer box. Any suggestions for problem solving? We just purchased a check valve and I’m not sure where to attach it. Thanks for your help.

When a skimmer box has been installed over 5 years, it is sealed with black silicone and screws and in time, the seal will fail. Your seal has failed and you need to reattach the liner to the skimmer box using the black silicone sealant.