I was at a hobby store today and noticed some fake rockwork used by train enthusiasts to build mountain scenery for their landscapes. It was called Natural Foam Rockwork. I believe it was made out of 100% latex. Might be good to use on back wall or on built in overflows or even to cover PVC structures instead of that pond foam stuff.
Does anyone know if this stuff is safe to use in an aquarium?
Does anyone know if this stuff is safe to use in an aquarium?