Water Cooling and Fishtanks?

mikeb55121 asks: "Today I was refilling my fish tank and was thinking about water cooling for my computer. As I spilled the water on the ground I realized that I was pouring cold water in to my fish tank and that I had tropical fish and right then it struck me! If I could just hook up my fish tank and computer together so that it would use watercooling by using the water out of the fish tank to cool the processor and then go back in to the tank and keep them warm. In my head it works out just fine however I don't know if it would be practical in reality. If such is possible, it would be pretty tight since it would keep my processor, fish and me happy, all at one time! If any one actually is going to try this, please email me, as I would like to hear about your results and to know if an idea of mine actually works for once!" An interesting thought! If any of you have pulled something like this off, please share. (And post pictures if you've got 'em!)