A classic example of “too much of a good thing.” In controlled growing situations, like greenhouses, plants can benefit from boosted CO2 levels, but that also means they’ll need more of other substances, like water and nitrogen. Also, it has been shown that plants grown with high CO2 levels are more susceptible to attack by insects. It can also cause reductions in photosynthesis and may lower nutritional quality of staple crops, like wheat. So, we recommend checking on indoor-grown plants regularly for any CO2 damage that may arise.
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