Thanks for the information Arne! I think I actually looked at that in the manual at one point but maybe it didn't completely sink in. Unfortunately I think the price to watercool a mining video card would be a bit too much for the profit potential. In fact, if I went with water cooling video cards I think it would be about the same price as buying a new setup for a dedicated mining computer... which I may do at some point.
Again, thanks for the help!