Just suggestion on the ice, I have found it is best to use frozen bottles of water rather than trying to dump the right amount of ice in the water. Like Bill said to cold to quick will shock them. If I'm really trying to keep them alive I carry a seperate cooler full of frozen 2 liter and regular water bottles. Lots of water gets a 2 liter. Minnow bucket will get a small bottle. Once the water is cooled in a cooler you will be surprised how cool it will stay. Big plus is less ammonia produced and less oxygen need to maintain them