Hi i was wondering if anyone could help me.

I am not an experienced grower but I have been doing a lot of research, I however cannot afford a popper system and that is why I am making one at school for my technology project.

I am making a greenhouse control system using hydraulics to open windows to lower the temperature. the problems i am finding is how to control the co2, humidity and the temperature (if it gets too low).

What i was thinking is to use a propane burner to increase the co2, I canÂt afford a co2 sensor so I am using a timer instead (do you know how long it should be on for, for every meter cubed). I was also thinking to use the propane burner to control the temp if it gets too low and that would reset the co2 timer. The humidity is a problem because I do not know If it will screw up the temperature if I open the windows when it gets too low. Or if the propane burner will make the humidity rise too much.

If you have anything to say about my project I would be very grateful