Yes, you might need to add some water periodically. We had a pretty dry summer so I just hosed down my whole run the other day. It's the second time this year. I let the hose run on it until there were puddles on the surface of the litter. Stirred it a bit and 2" down it was still dry so I hosed...
Here's a link to the whole thread that details my journey from sand to deep litter.
https://www.backyardchickens.com/threads/help-springtime-stink-in-the-run.959402/#post-14929973
Just use a pitch fork and turn the sand into to soil below. Then start putting material right over the top. That's what I did when I switched from sand to deep litter. I scoop material from deep in the litter and screen it each fall to put it on my garden.
One of the first things I noticed when...