Gold Label Black Pond Sealant

The black stuff seems to be holding the rubber patch So i can give it a 5.

Good product, works well

It did exactly what they said it would do, and it solved my problem I thought I could not fix

Easy to use and fixed the patch to pond well.

I used it to fill a crack and a silver dollar-sized hole in a cement pond. I didn't have to remove the fish or empty the pond. The stuff is messy to use, but if you have experience using epoxy grout or clear calk, there won't be a problem. The pond holds water, and the fish didn't die. Success! I can't comment on using it on pond liners. however.