Something has been troubling me and I wonder if there may be some one on here who can help. As I stated this cooler performs much the same as my original ( maybe a little better ). It is far superior however in that it passes water over a larger area of heat pipe, the water resistance is a lot less, and because it is going across the pipes rather than along the length it does this faster. I have given this a bit of thought and maybe the heat pipe is maxed out. Let me explain: If you imagine a heat pipe air cooler with a fan attatched, as you turn up the fan, the cooling performance will increase but maybe you'll get to a point where increasing the speed of the fan further will not improve performance. At this point the speed of the evaporation and condensation within the pipe will have reached it's limit. Maybe, because water works so much better than air, it may have hit this limit in my cooler. It's just an idea. Maybe one of you guys can help.