How does other corals look? It seems like your ph is alittle low at 7.8 and maybe salinity is alittle low also...others have said that corals like salinity around 1.025. Maybe check with liveaquaria website and see what they recommend for brains. I'm sorry, it's been along time since i've had one in my tanks. I never had much luck with them so I've stayed clear. Sorry i can't help much...maybe someone who knows more about it will chime in.