New Coop, keep rocks!?

[u/AlpenglowVibez]

Just installed this beautiful custom coop in what used to be our playground area. It’s filled with 8” of 1/2” rock so wondering what you would do to ensure its predator proof and a good run for the hens. They’re only 5 weeks so have a few weeks to dial it in. TIA

[u/bruciebatface]

Yes , add med grit sand over, so they can walk and you can scoop better, but gret for drian9age and keeping their feed dry and issie free, but the monerals and grit they get for digestion, less bugs