wildroseofky
Aquarium Advice Addict
I read all kinds of articles on people making their own rock formations with grout and styrofoam so I gave it a try. I just can't get the grout to stay on the styrofoam. I put about an 1/4 inch coating on it and let it dry for three days. When I picked it up, the grout chipped off in several places. It just cracked off. I am going to recover it with Portland cement and see if that works. I have tried several different Styrofoam shapes and the grout will not stay on it. Is there some trick to making it stick?
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