I am doing a seahorse tank now but my tank has tons of corals. I have it set up where it would be hard for him to get stung, all the corals are in a high flow area which he dont swim in. Only thing I have that could hurt is a anemone, frogspawn, and a chalice which I dont know. He never gets near these corals so I think im fine. I also keep my tank at 75 no higher. Some people have told me its a big "no no" to put them in a reef tank but my LFS has them in a reef tank so I guess it depends. I was just wondering who has a reef tank and how successful it has been.