The fan is blowing air from the ice chamber into the ferm chamber. The green electronic device on top is a 12 dollar dc celsius temperature controller i got on ebay that's powered by an old phone charger with a probe that is hanging in the ferm chamber. I just set the ambient temp to keep...
I am a small batch brewer who is obsessed with the DIY aspect of brewing and have built a small batch brew tower with a built in fermentation chamber that can hold up to four 1 gallon jugs at a time which is the most I would ever be able to brew at a time. Let me know if anyone has any upgrade...