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Disclaimer: I like indoor plants. Wouldn’t you need a very large number of indoor plants to bring C02 sub ambient levels with - a human in the room exhaling C0

• mchannon 2y ago
  Let's suggest you're using pineapple plants. They are nowhere near the best choice if CO2 mitigation is your goal. One human produces 51.4g CO2 per day (note: this number is from the leading source on Google, which is on the low end of a wide range of reported numbers). 100cm2 of leaf area consumes roughly 1g CO2 per day. So you'd need roughly 5,000 cm2 of pineapple leaf area, or 0.5 m2, or (roughly) 5 square feet of leaf area. Easily doable. You'd want to triple that to get the numbers noticeably below ambient. Also doable. During my travels I've measured large buildings that have lots of indoor plants. They feature the lowest CO2 ppm numbers I've ever recorded, anywhere, around 200ppm.