Maybe we could describe the different methods of acclimatization of new livestock that we all use respectively. It would be interesting. Here is what I do: Float the bag for about 15 minutes. Then after that, while still floating the bag, I add 1 tot glass of tank water to the bag every 10 minutes. Depending on the water volume in the bag, I do this for about an hour. When I've added my 6th or 7th tot, I cut a small 1mm - 2mm hole in the bag to let the water start to "equalize". After another hour, I place the coral. In the case of fish, I do the same.