For the past 2 Months my trumpet coral, which has about 30 heads on it, Wont open up. All my levels are good and everything else int he tank is doing ok. I read somewhere about hydroids or somthing and i noticed what kindof looks liek them along the backs of my rocks, and theye are on the skeleton part of the trumpet. Could this be the reason i wish i had a camera to take a picture of it. If anyone can help me please help!