I bought four of them and came home and floated the bag for a while and then started to add tank water to get them pH adjusted and when it was time to put them in the QT tank I wanted to do so without the bag water. What a time I had. Those little guys are fast! I thought I would pour the water and them into my big net and then transfer to the tank. Noooo, two had to suck onto the bag and did not come out. I had to tear the bag to get them out. I'm so glad I put the drain plug into the sink because I had to put the net down which had the other two in it. By the time I got the stuck ones from the bag the other two were swimming around in the sink in the water from the bag.