I have never had a problem floating the bags. I don't do this for long, just long enough to get the temp up if they were shipped to me. Then I open the bag up and put them in a bucket/container with their water and slowly add my tank water until I have about doubled the amount of water, this takes about an hour. msjinkzd told me about using a "drip line" but I was never able to figure that out, guess I need to learn to think outside the box. You can PM her she is very helpful!