Poly tunnels, fascinating bits of kit. Coming from background that is all about air flow, hot, cold, water. That aren't far apart The pic is our cm2, it's monitoring temps and drops in propergator door openings and this then gets added to an ex smell sheet with plant germination times and sown times π€. Soooo Data center (dc) keeping water out and temps down. Poly tunnel kepping water in and temps up for 6 months and then fighting to keep it down so nothing dies. with servers high temps are bad. Air flow is key in both and with both big fans to move air. So like in a data center we track temp humidity light air flow they are all factors in growing plants and in such a big tunnel it has cold and hot sides like a dc. We are south facing to temps hit the mid 50s in summer with probes in pots we can see when they are dry or to wet. Right think I have had my moment of justifiing geekery to the wife π€π #ystwythgcn #offgrid #offgridbusiness #geek #polytunnel #polytunnellife #gardening #data https://ift.tt/3bpHiei