Huh. It isn't anything I've ever seen that I'm aware of. I had to google tulip-polyp syndrome to even know what the heck you were talking about. It's been talked about some in other forums but I've never heard of it. In fact, I'm not so sure I would even think something was wrong if I saw it. The pictures posted as example look like weirf coral growth but there's still good color and a lot of the pics show polyp extension. Guess it's just another thing for me to worry about.