BB Bottom Guard???

[Beverly]

I also have my LR on the glass for about two years. Rearrange that tank often, and have had no problems with scratching or damage when rocks accidentally fall. I don't use cable ties or anything to keep my rock in place. I just make sure they are stacked solidly.

I considered putting cutting board on the bottom but was concerned that I couldn't seal it properly to prevent crud build up under the board.