What's up with my mushroom?

[Jinx]

If people haven't seen me posting, the 29 gal modified BioCube I'm working with was a rescue mission. It came with corals, established somewhat, over come with algae, and plagued with purple slime. It's taken a bit of hard work, frequent water changes and treatment for the slime. I even found corals buried in the sand. The mushroom has been real perky here lately but this morning the lil guy is looking a lil weird and I was hoping someone could tell me what's up with him. There's just this one little side that's wrinkled up. It looks like he's may be disconnecting?

 

[melosu58]

He`s looking bleached. What type lighting and what is your calcium reading?

 

[Jinx]

Lunar blue-moon-glow LED'ss. Cora life compact fluorescent lighting with dual fans.

They are the original lights from when I rescued the tank. As for calcium I'm not familiar my testing is Ph, Ammonia, Nitrate, and Nitrite