I am pretty sure I saw that article on the guy who used his pool as a reservoir too. (Here is a link on successful evaporative cooling -
Nuclear Tower Water Cooling. Not for normal use but still interesting.)
The pool would give basically infinite capacity to dissipate heat. My question is how much water is necessary to achieve this? I really like the idea of a quiet computer and would like to build a system to get the noise level down as much as possible for normal operation.
I remember a HOWTO written some 10 years ago when water cooling meant building your own blocks from chunks of copper. The author had dug a hole in his basement floor and installed a 20 gallon tank of some kind. Then he ran pipes up to his computer. The pump was in the basement so it ran almost silently. The system had no rad. There was enough water in the reservoir and the earth was cool enough (even in summer) that it could dissipate the heat fast enough.
I am not about to do the kind of plumbing necessary to achieve either of these feats; I do not have a pool to start with!

I would not mind setting up a very large resevoir. Something the size of a fish tank would doable. I would not mind turning on the fans when gaming or otherwise maxing out the processors but I would like it to be very quiet when doing low power activities. I wonder how fast would a pair of 2L soda bottles heat up if the rad fan was not in operation.