Nope, no corals at all. It is strictly an invertebrate tank for right now. I guess the sea apple would come closest to enjoying DT's. Here's my list of inhabitants:
sponge, coral banded shrimp, sea apple, orange linckia star, cucumber, fighting conch, and various hermits
Every 3 days I dose 2 teaspoons of Coralife Invertebrate Smorgasbord. Would the sponge benefit from that at all?