I thought the same when I made the stand for Saph and was thinking of adding extra sheets of MDF on the bottom. But once it was finished I was surprised how stable it was. The damn thing is pretty heavy as well. Considering the weight of the tank filled with those rocks, water and substrate, I think it will have to be a pretty big knock to topple it over.Man this looks awesome. Thanks for posting the pictures!
Is the stand reinforced in any way? It looks like an accidental bump might send everything toppling, or at the very least send some water over the top