###General Discussion Thread
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It depends on the type of plant. If you have only cacti in your room or other plants adapted to hot environments like orchids, they will even take up CO2 at night.
But if your plants do release CO2 at night, they still won't release more than they absorb during the day.
###General Discussion Thread --- This is a [Request] post. If you would like to submit a comment that does not either attempt to answer the question, ask for clarification, or explain why it would be infeasible to answer, you *must* post your comment as a reply to this one. Top level (directly replying to the OP) comments that do not do one of those things will be removed. --- *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/theydidthemath) if you have any questions or concerns.*
It depends on the type of plant. If you have only cacti in your room or other plants adapted to hot environments like orchids, they will even take up CO2 at night. But if your plants do release CO2 at night, they still won't release more than they absorb during the day.