is gorilla glue fish safe?greenbirds said:Gorilla Glue claims to adhere to rock and foam. As a test I glued a heavy piece of granite slate to a piece of styrofoam, and it holds to the point where trying to separate them makes the styrofoam rip apart from within itself rather than the foam/rock interface, so that's good enough for me :thumb:. I have not tested it in water yet, but Gorilla Glue claims to be 100% waterproof. I am preparing to line the back of a large tank with slate rock this way -- slate to styrofoam with Gorilla Glue, styrofoam to glass with silicone. Will let you know how it goes in the next few days.
The manufacturer claims their other product, Ultimate Glue, is, after it has cured. I didn't ask about Gorilla Glue. I'd be sure to rinse it before use, and I plan to use the Ultimate Glue for small jobs because it would be convenient and I might be able to fix small broken parts like on filters etc. For more extensive jobs I will still use the waterfall foam. The thing is once you open the waterfall foam, you have to use it all in a short period because it does not last long after being opened.toffee said:is gorilla glue fish safe?