Achim, AirGradient was the key that unlocked this whole project for me, so thank you for creating it. Also, I see that you're still so active in the forums help

Achim, AirGradient was the key that unlocked this whole project for me, so thank you for creating it. Also, I see that you're still so active in the forums helping users (including me) out, double kudos! That's a great suggestion about making it a demand-controlled system! It's definitely on the long-term roadmap. Right now, though, my system is still a bit underpowered for that. I'm in an "all fans on" mode just to get the numbers down to a barely reasonable level. If I could easily get the CO2 to a steady 500-600 ppm, then absolutely, dialing it back automatically would be the next logical step. So, my immediate focus would be on improving the raw efficiency. Following a great suggestion in this thread (https://news.ycombinator.com/item?id=44369469 https://news.ycombinator.com/item?id=44369469), I plan to design a new mount to put a fan directly on the trickle vent itself to actively pull fresh air in. It feels like a more direct approach, and I'm curious to see what that does to the numbers.