That would work fine! Urates like that are usually from over supplementation, or dehydration. But since you say he drinks his water, i'd imagine its from too much calcium. So lets see if that makes a change for the better in his poos.
The good thing, and the most important thing, is that you state he is acting fine and healthy and normal! So thats great. It's us beardie parents that get worried, not them haha!
-Brandon