I'm researching doing a 3D styrofoam carved background for my 10 gallon tank. I'd like something pretty detailed and it seems like epoxy resin would be the way to go to preserve smaller details. However, I'm only able to find guides using concrete. Does anyone know of any guides for epoxy resin (or of a reason this stuff wouldn't work)? I worked with it once back in high school art class and it's been so long now I'd have no idea what to even purchase that would be aquarium safe also.