johnksss
what does this bong cooler look like?
Basiclly its a WCing loop, but rather than a rad, you run the water through a shower head into a pipe, which has a fan intake on it. This seperates the water, so its really easy too cool. But since it isnt a closed loop, water will evaporate, which means you have to fill it quite often (usually around daily). They even say under the right conditions you can get sub ambient temps with one, dont ask me how though.
Another problem is that the humitidy in the room the bong is in will be very high.