How much light is it getting?
I have the same type in my aquarium, TG.
The red ones tend to prefer lower light levels that the others.
It sounds to me like yours has expelled its symbiotic algae from the red
area because of lighting issues?

When I had mine in too much light, it reacted badly though, by not expanding
very well in MH lighting.
I would think that if too much light were the case, then you would have seen
similar results.

Do you target feed your brain?

CW

"hobbes" wrote in message
ups.com...
I have a small brain coral (green middle, red outside edge). It seems
to be thriving (very fleshy) but over the past 2 months the intensity
of the red coloration has dissapeared to almost none. The green is
still strong flouresent, but the red has changed to an almost
translucent white.

Anybody ever expereince this or have any suggestions?