No my fish were fine I wouldn't worry to much you will be done in no time. As far as the water I wouldn't worry to much I went from about 80 total gallons to about 140 with all sps. I had a little browning out I'm sure due to the change but nothing major. Most of the worry would be if you were using all new rock then you would have a pretty big cycle. If your using a lot of old water and some old rock it should just be like a big water change. As far as people loosing fish and the white spots and all my guess would be there was already a parasite in the tank and the stress caused a flare up.