Just like humans can’t live without air, plants need CO2 to survive. CO2, or carbon dioxide, is a colorless, odorless gas that occurs naturally in the atmosphere. Interestingly, even aquatic plants (those that live underwater) need CO2 to perform photosynthesis. Cannabis plants are no different. To ensure that your grow room reaches its maximum potential yield, you’re going to need to utilize CO2. Because it’s easy to control CO2 levels in an indoor garden, this is one clear advantage of growing indoors.
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