QTOFFER
Aquarium Advice Addict
I never heard of epoxy coating coming off gravel, but the guy in my lfs told me this funny story. A customer bought 50 pounds of coated gravel and decided to boil it using a big lobster pot! 8O The epoxy melted and the gravel fused into a useless 50 pound lump! Then he tried to return it, claiming it was defective!