[Ehaze]

I bought a yellow leather a week ago, the thing wont open up, The guy said "it likes high light", so I moved it up to the top of the tank, and the thing opens for like 10min then closes back up. I fragged a piece for my brother, the little pice is 100% open and it has all these little tubes stick out of it, the big piece is just staying closes. Might I have too much light on it?

its a t5 6x54watt 4 x 10k, 2 x blue atc. any ideas?