I've always read from many sources that you wanted to take time acclimating fish so as not to shock them. So that's what I always did. Dripped for about an hour. Gresh stated that if the acclimation went past 30 mins there would be less dissolved oxygen which I never even thought about. Lately I've decided to acclimate for only a short period, maybe only 10 mins. With this routine I've actually had 100% success so far as opposed to maybe 75% before. I used this method for a Scott's Fairy Wrasse, Chevron Tang, Bluethroat Trigger, Naso Tang, and all are healthy and eating. They fish behavior observed was also much different. The fish ate within a day of introduction and were much less frightened.