My brain is a wesophilia. It basically needs good lighting, and medium waterflow. If the water flow is too high it will not open all the way. We wouldn't want that! Anyhow, these guys get really meaty. They puff up so much its funny. At night it pretty much inverses and shows its tentacles. Also, when the Hermies climb on it they look like they fell on a air bag from a stunt movie. They just deflate. If you decide to get one don't be worried the slime they produce its just acclimation. They also take a crap every once in a while. It is very important to maintain calcium and alkalinity.
Lastly, I just wanted to say that I am stocking my reef tank with only easy to care for corals. It's still gonna be beautifull. Why would I want to get all stressed over a hundred dollar coral that will probably die. My theory is that maintaining hardy corals benefits my pocket book, the ocean, and others who get free frags! Fight over harvesting of the ocean!
Ps - watch for free frags by me in the near future!!!!