I've searched the internet for a solution to my problem and I can't find anything that even references a potential fix. Maybe one doesn't even exist, but I have to try, right? So, here is my problem. I have an outdoor man-made waterfall. Of course, to get the waterfall to work, you need a sump pump and a pipe going back to the top to continue with the waterfall. One winter I must not have winterized the return pipe well enough and a crack happened that now drains the water from the system in a matter of days. I need a fix that doesn't involve tearing up the ground to replace the portion of the damaged pipe. Something akin to how you might fix a leaking radiator with pepper or egg yolks. If anyone here knows of a product or home remedy that would work on this problem I would be grateful. Thanks in advance for any help.