Newbie with MAJOR problem...

[Maxout]

The hose does not have a leak in it. Your existing underground pipe you are running it through does. You would push /pull the hose through the entire length of your pipe then the hose would be sealed to the pipe at both ends and essentially becomes a new pipe, eliminating the leak. The problem is that in order for the hose to fit inside the existing pipe it must be a smaller diameter, this would restrict flow and total volume.