Light levels and other atmospheric conditions also play a role in how much extra CO2 is ideal for a garden. It’s always best to research the needs of what you’re growing.
Larger fungi such as mushrooms can also be used to naturally supplement CO2 in the grow space. There are bags on the market that contain mushroom spores in a medium expressly designed for the purpose of slow-releasing CO2 in the garden. As the fungi grow, they give off carbon dioxide. When selecting bags for purchase, make sure the medium has not already been fully colonized, as this is a sign it is almost used up.
When supplementing CO2, the goal is to provide the ideal range of additional CO2, which should be higher than atmospheric conditions, most commonly in the range of 1,000-1,300 ppm, depending on the specific needs of the crops. CO2 levels exceeding this range have little additional positive effects, and levels exceeding 1,500 ppm may hinder plant growth.
Another emerging product is the CO2 canister, a user-activated, all-natural CO2 generator that begins to emit CO2 once the consumer adds warm water and shakes the bottle. These canisters have become popular with gardeners looking for an easy and effective way to supplement CO2 levels without adding any heat, open flames or additional equipment.
Surrounding the plant’s stomata are guard cells that allow the stomata to open when light and moisture are conducive to growth, and to close in times of drought, high heat and darkness. This is why supplemental CO2 is recommended only during the lit hours of a garden, whenever possible, unless the source of supplemental CO2 is continuous and there is no way to turn it off.
Prepackaged pads or buckets containing sodium bicarbonate (baking soda) and citric acid are easy ways to add more CO2 to an indoor garden. When sodium bicarbonate and citric acid come in contact with water, they rearrange to produce sodium citrate and carbon dioxide. This method is a low-mess option, as the pads or buckets are simply swapped out as needed.
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Takeaway: As an essential piece of the photosynthesis puzzle, carbon dioxide is an important component of indoor gardening that can be supplemented in a growroom in many forms. Provided you are already up and running in the growroom, and everything is going smoothly and plants look healthy, adding more CO2 will lead to even better-looking plants and increased yields.
Compressed CO2 tanks come with a regulator that allows the gas to be slowly released over an extended period of time. Tanks of compressed carbon dioxide are available at many hydroponics stores and traditional commercial outlets. They are a popular in home indoor gardens, but tanks must be routinely brought in and out of the garden, which may be cumbersome compared to other options.
Adding more CO2 will lead to even better-looking plants and increased yields.
Indoor gardeners are always looking for new and innovative ways to boost their yields. There is, in fact, a very simple way to maximise your yields and grow strong and healthy plants, and this is through the addition of CO2 to your grow room. But what exactly is CO2 and how does it benefit your plants?
It is understanding this behaviour that can really benefit your grow. If everything is being done correctly and you have a fine tuned system, then CO2 can be the one big difference in boosting your yields. Adding enhanced CO2 levels to your grow can significantly boost plant growth without having to change the way you grow.
They work through photosynthesis – photosynthesis is the process by which plant leafs make carbohydrates. Sunlight, carbon dioxide and water are converted into carbohydrates and oxygen by the action of chlorophyll in the chloroplasts of the plant. Plants growing indoors under artificial light often lack enough CO2 to efficiently photo-synthesise. When plants are able to maximise the process of photosynthesis, the result is larger plants with larger yields.
CO2, or carbon dioxide is what we expel when breathing, and what plants use to initiate photosynthetic functions. Plants actually ‘breathe in’ CO2 in the day, but give out CO2 at night.
Levels of CO2 are measured in PPM (parts per million), and ambient room levels are typically in the region of 300-400ppm. Assuming you have sufficient circulation in your grow room you should be able to achieve the atmospheric standard of 390 PPM. At this level, you should see plant growth similar to what you see in your garden.
If you are looking to accelerate the grow cycles of your crops consider adding additional CO2 to your grow room. Plant growth accelerates as you increase CO2 levels up to around 1,500 PPM. Growers have observed up to a 100% increase in grow speed at 1,500 PPM.
During the vegetative growing stage adding CO2 is the biggest way you can increase the rate your plants stretch, allowing your plant to grow with a lot more vegetative grow in a much shorter space of time.
Using exhale CO2 bags are the natural and easiest way of adding CO2 to your grow room. The Exhale CO2 bag cultivates carbon dioxide 24 hours a day with no need to refill bottles or use expensive production units.
The most important and obvious benefit to your plants is the significant increase in growth that will occur, especially if the potential of your set up has already been maximised.
When adding CO2 to your grow room, the flowering stage is the most important. Adding CO2 to your grow room, especially in the first 2-3 weeks of flowering, can kick start flower production and boost flower size significantly.