I hope 1.021 isn't considered low. I just went down to double check, and it's right in the center of the little line on my hydrometer. The line (the sweet spot for salinity I assume) goes from 1.020 - 1. 023. With that said though, I had measured the salinity of the water the corals and fish were in and it was right at that 1.021 as well, so I matched the quarantine to that. My main tank is actually higher at 1.023 usually. I'm surprised no one is surprised at the spots on the fish. I was sure someone would see that and no what could have happened. As an update, no E-mail back from the company and it's been over 24 hours now. That's it for me for today, off to bed.