I’m getting my aquascape started, and have read various threads about what to put under rock to keep it from sitting directly on the glass or being pushed around to the point of collapse by the tank inhabitants. I like all those sand sifters!! After reading options like egg crate in full, or egg rate in small pieces and the thicker starboard options, I’d like to ask I’d anyone thinks a BPA free polypropylene kitchen cutting board that’s a quarter inch thick will work. The starboard was thicker than I wanted, so this seems like a viable option. It sits flat with no grooves, bends, or seams, so once the rock and sand are in place on it I can’t see how anything crazy could get under. Is there something I haven’t thought of that would prevent this from being an option? Any thoughts and advice are greatly appreciated!!