Does anyone know any sort of glue or sealant that would work in attaching rocks together? I'm trying to make some fish decor and cover for my tank and I need some sort of glue. Thanks!
You can try silicone that you would use to reseal a tank. I wouldn't by it from the petstore though its overpriced. Take a look at this thread and it will give you some ideas on some safe ones.
I have a large tube of the marineland silicone sealant. I just wasn't sure if it would be strong enough to hold together rocks. These rocks aren't small ones but neither large. They are 5"x5"x1" squares that I bought from home depot. Thanks for all your input.
I know for my Koi tank, we had to seal the liner to the Bottom Drain, and we used Aquascape Black Pond Safe Silicone Adhesive, and it SUCKED! We applied it on completely dry, let it sit for 4 days (it says only 24 hours) and when we filled it, it leaked all over the floor. BIG MISTAKE. After we emptied the tank and checked the seal, it peeled right off. It didn't stick at all. It stuck to nothing.
So, we used PL water proof adhesive. It is great. We have used it on a lot of our aquarium and pond projects. You just have to make sure it dries completely. It's a tan color. It works great, and it's fish safe.