well my derasa clam, brain coral, torch coral, and candy corals have all died in the last 3 weeks for reasons unknown. also, i bought a $100 reef package online here, got it delivered on tuesday, they're all dead. so you'd think there's something really unhealthy goin on with my tank but the hair algea and aptasia's are thriving better than they have in the last 4 years!
these are times when it may be best just to drop a hairdryer in it.