Ok, so I checked everythingo ut and everything seems fine. Also, my Yellow Tang has been getting much more color as the days have been going on. The "Brown Dots" that I had thought were on the tang seem to just be a shade on the tang. It doesn't seem to be much of a problem anymore. It's also possible that lowering the salinity may have started to kill whatever it was off. Anyway, everything seems to be doing well at the moment and I will be keeping everything where it is right now and will shortly move everything from my DT into my QT/Hospital tank. Then empty out that main tank and start all over! Hooray!