Where did you get it? Is it under warranty? If it is, and if you can get your money back out of it, I'd at least go with something similar to this, instead. You could get cheaper if you go custom, but this would be the "easiest" replacement solution, IMO:
Comes complete w/ green coolant which seems to suit your style.
One of the things about liquid-cooling is you really have to make sure you go with a good, reliable pump. I'm not even sure what the Freezone uses, but this is only one of a # of occasions I've seen where it seemed like it didn't even kick on for someone after hitting the power switch.