I found that adding a lot of thermal mass to a greenhouse can help buffer out some of my human foibles and inattentiveness
Discussion
I have 2 40gallon trash cans of water in there as thermal mass. Just not enough when it’s 2°F outside
Those are rookie numbers 😉😂
https://northcentral.sare.org/news/high-efficiency-year-round-tropical-greenhouse-in-south-dakota/
Ah interesting. It’s only a 6ftx8ft space. There’s not much more room for another barrel.