Too Hot – The greenhouse is more of a shed style seed starter home. Many of the veggies either bolt or whither. A large exhaust fan on a timer seems to be working to curb the temps, but
Siphon not activating – I’m second guessing how well the siphon is working. I’ve felt confident in plumbing for the past 6+ months. Recently i’ve noticed the system sitting at an equilibrium flow with the water level down.
Not Enough Data – This goes hand in hand with the other problems. Some data logging elements in the system would give better visibility into the problems (Heat / water level)