If 2 or more batches of beer made the same day are put in a temp control box, with say a light ale and a heavier double, will they be happy together in the same temp box, or will the most active one be too hot, and the less one too cold? Is it "optimal" to do one batch at a time, per box? At least during primary? Or will temps be within a degree or 2 anyway with air temp controlled.
I have room for 2 separate boxes, cooler for primary and warmer for finishing would let me brew more beer than once every 3 weeks tho...
Perhaps 2 boxes is better.