Our last prototype was not very efficient because it didn't get enough of the surface water to flow through the tube into the lower layers of water. The transfer process was through a 1 inch long diameter pipe and was not effective enough. Additionally, the top foam-float cut out bowl shape which was to catch the surface water was not large enough. We drafted a new prototype conisiting of a wide cylindal shape made out of a foam float ring on top holding up a plastic bag with a wire aronund the bottom, to weigh it down. This would hopefully catch a lot more of the surface water which splashed into the device and replace it with cooler water.