What about the vapor? Did you check the percentage of the humidity in the cave? If there is 12°C cold and the asics are warm the moisture precipitates on the machines. So the rust will ruin the farm. What kind of solution do you have for this problem?
I asked about the rust issue earlier and the concerns were not addressed.
I do however, look forwards to the video of the cave walkthrough, as has been promised.
Please check our youtube channel.
There you will find videos.
and btw this question was already answered several times, please check the topic.