I'm in the planning phase for a system that I want to build, that's going to need a custom radiator. I thought about a bong cooler, but I don't want the hassle of having to check the water levels so often, plus there's the issue of having to replace the additives, and be on the look-out for...
I was looking around for a waterpump to use with an evaporative cooling setup, and I found this http://store.yahoo.com/pet-king/96316770706.html. Basically, it's a UV sterilizer, for use in aquariums to control the growth of nasties. I saw it, and I immediately though hey, why not use this...