I think when plant absorb water, or H2O, they use the H, or the hydrogen, and aspirate (or "exhale" in animal terms) the oxygen they take in as a liquid as a gas. The aspiration I believe is very slow and could take 100 plants 100 years, longer than the average lifespan of a human being, to see significant increases in oxygen levels.
How many house plants are needed to improve oxygen levels, in order to see results?
Kurdiatcha gave a much better answer. Plants respire (using oxygen) around the clock, but only photosynthesize (releasing oxygen) under lighted conditions. If you have a lot of algae in your aquarium, and don't keep it lighted, your fish may die of oxygen deprivation at night. Report Abuse
Reply:There are too many variables to enable the question to be answered.
Contrary to popular belief plants dont; just produce poxygen. All plants are aerobic organisms, just like animals. That means they use oxygen to enable them to burn their food.
Plants can produce oxygen, but only when they are actively growing and only if they are in strong enough light.
If a plant is not under strong enough light or if it is unable to grow it will burn its energy reserves and use oxygen in the process.
The amount of light a plant needs to manage to produce oxygen varies with the species. Some species of indoor plant can produce oxygen under an 80watt or higher light globe. Most species can not and need to be taken outside regularly to 'recharge' as it were, to be able to build up energy reserves which are slowly depleted when they are taken back inside.
And of course in darker situations ALL plants consume oxygen. So overnight ALL plants will be reducing the oxygen content of the room.
As you can see you need to define species, age, time period and illumination levels to enable even a rough estimate.
Under 'normal' circumstances the more plants in a room the lower the oxygen levels will be.
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Broken Teeth
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