Yeah, I agree Biff. In the grand scheme of things the parameters aren't terrible, its just been all of the fluxuations over the last few days. Ammonia reaching 0.50, nitrates going from 2-5 to 20 in a day, temp going up and down by 3 degrees repeatedly over the last few days (last night I had to turn the fan off because the motor was overheating and since it had cooled down I thought the temp would hold steady at 80 last night, but this morning it was back up at 83 - yesterday it took me forever to bring it down to 80 from 82), and then the salinity going from 1.025 up to 1.029 and then back to 1.026/7 in the course of a day or two. If it were just one thing I think they'd be less stressed, but with all of these changes I'm going to be surprised if I don't lose stuff. I've thought about moving the stuff that's really stressed to my tank at work and might move the brains temporarily, but just don't know... I guess my hesitation is that I don't want them to be more stressed from a move, and there's a pending 13h power outtage next weekend at work that could very well wreck havoc on that tank, esp for corals that are already stressed. The fish I've thought about moving into the QT tank that I have the skunk clowns in right now, but that might stress everyone even more. I'm just hoping the firefish is still alive and hiding in a burrow somewhere. I added black sand last week and its now taken to diving into the sand under a rock so hopefully its still alive in there. If I can get the temp and salinity stabilized I'm hoping things will start to look better. I have a bottle of Dr. Tims arriving today for the QT tank so might dump some in the nano tank for good measure as well, esp. if the firefish dies - last think I need is another cycle!