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Hi Mike, I have a question for you guys. What is the highest safe level of CO2 that is recommended in the tomato greenhouse?

April 26, 2017CO2 guys Highest level Mike recommended safe tomato

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Hi Mike, I have a question for you guys. What is the highest safe level of CO2 that is recommended in the tomato greenhouse?

1 Answer

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Thanks, Kent Dear Kent, You ask a very broad question, so I will attempt to break it into various parts: 1 x 360 PPM CO2 = normal atmospheric levels 2 x 360 PPM CO2 = plant performance improves, bumblebees continue to work well 3 x 360 PPM CO2 = plant performance improves, bumblebees start going dormant 5 x 360 PPM CO2 = plant performance peaks, some people begin getting headaches 10 x 360 PPM CO2 = may be toxic to humans In a greenhouse, levels could be increased to 700 – 1000ppm without any adverse affects. I hope this helps.