Heres the deal....I am making a cage and I am making a custom aquarium to put in for their water dish. I want it to look as natural as possible so my first thought was to put tile grout in it. Then I relized that the grout will not stick to the glass. So heres my idea, I am going to epoxy a bunch of rocks on the glass and fill in the gaps with the tile grout. My question is....Could I use epoxy in their dish and how long do I have to let it dry?
On another note, One of the sides of the aquarium is going to be visable(not having any grout or rocks on it so the water WILL be able to eventually seep behind the grout/rock.

