I love how your solution was to build a distiller instead of just turning your fans down. That's true overclocking, right there. Just to satisfy my curiosity, you know that your evaporative surface exists to chill your water more than to disperse your heat, right? A jumbo cooler with huge fans will chill water faster, but once your reservoir temperature reaches the dew point, all that large surface area (or high airflow, in your case) is going to waste.
What would be interesting would be setting the fans on a temperature-driven fan controller so that they're on high while your reservoir temperature is above the dewpoint, and turn down once you've reached your end point.
The fans that I have on my bong definitely blow more air than is required. My volenti will actually keep everything cool without fans at all.
In keeping with the spirit of "experimental" I decided to see if I could make the still better. I noticed that the plastic was getting to hot, so I added fins made of duct tape. Now I know that duct tape does not have the best thermal conductivity... but it worked pretty well in this case. I can touch the lid comfortably now, and the vapor condenses much more readily. I think that I was able to produce half a gallon in about 3 hours. Now that's not the best. Or even reasonable. It's alright though. It was very interesting distilling water and now I have a kettle (Yay!) and a storage container - that I have to patch up