You should use a cooler instead of a fish tank and a 5000 BTU Window AC should be able to cool that hardware, the question is how cool will it keep it. Here is my old post when I did this a few years ago to give you some ideas.

http://forums.extremeoverclocking.co...d.php?t=307110

Also, Drewmiester is a wealth of information and is still active on that site.

Still have mine, sitting in the garage, but it still works.