CO2 levels in a Glasshouse over 24 hours?

Question

hello, I'm stuck on a question and i cannot find the answer, if anyone knows or has a graph of some kind to answer my question which is: what happens to the carbon dioxide levels in a glasshouse over 24 hours?, that would be great, many regards xx

Answer 1

Totally depends on the plants in the greenhouse and what produces any extra CO2 for the plants (paraffin heater).

Generally it would be an inverted "bell" type shape. with the lowest point from about 2 hours after sunrise to sunset. during the dark periods, the CO2 levels would be at a maximum. After sunrise, the plant chlorophyll would increase in the uptake of CO2.