There is no good solution, except...
Replace the tank. Nothing will bond permanently to polyethylene except polyethylene...and to do that you have to melt both the tank wall and new poly so that all run together to become one. It takes skill with a heat welder...and a heat welder will cost you more than new tank. We have about 400 different shapes and sizes to choose from...so if you'd like e-mail me at peghall@bellsouth.net, I'll see what we can do for you.
