That was my experiance also. Its really soft and easy to work with and molds nicely, but I couldnt get it to stick to anything.

The glue is not sticky but will adhere to rocks etc quit nicely once it is about 3/4 hardened, it will push nicely into porous rocks and hold solid. You could likely frag every coral in your tank and the skimmer would not be effected.

Our newest purple version is a little more sticky but still will not stick to just anything it touches. For those looking for it to stick to more non porous surfaces I suggest you wait a while longer until it hardens up about half to 3/4 fully cured.

The real advantages of our glue is the following;

1. No skimmer issues
2. No water clouding
3. No stained fingers
4. No stuck glue on fingers
5. No exothermic heat (damages frag tissue)
6. No smell
7. Copletely FDA approved materials
8. Easier to mold into shape
9. No cracking or breakage once cured