>>661571(continued)
Oh and I forgot pic in previous post, here ya go
Another thing I thought about doing is adding flappable "doors" on hinges fixed on the room-facing side of the rack, and fixing alu foil on the plant-facing side of said doors, to increase lighting. But I fear that by doing this and cutting the air off the rest of the room like that, it may locally become too cold despite the double-glazed windows - it has been a very mild winter so far (it got to freezing like 5 nights total, in the worst one -2°C/28°F), but in very rare severe cases we might get down to -18°C/0°F here (record low).
So would it be sufficient if I installed a PC fan on each deck and let it run quietly (let's say 6V instead of full run 12V)? I do have a spare thermometer with radio connection to a station and then my PC via USB so I can monitor and track temps + humidity
