Thank you all for the replies:
The lighting: 220watt Power Compact 1/2 Actinic 1/2 white.....oh and the green thing is lettuce for the tang.....he loves that stuff! Yes I do have a few sponges on some rock......I will have to get rid of the green brittle star??? I've never heard of them causing problems....will he start killing fish? He has probably doubled in size in the short time that I've had him. He is one of my favorite specimens....very active...used to bother the banded serpent star, but hasn't messed with him in a while. Please give me more details on the green brittle star.
Thanks,
Brandon