CO2 Enrichment (5)

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CO2 Enrichment can supercharge your growth rates leading to your plants finishing earlier and a decreased cycle time from seed to harvest. Plants can only grow as fast as the weakest link in the chain - the amount of CO2 in the air is often the cause of a ‘funnel’ where all other environmental factors are within optimal levels, Carbon Dioxide will be the limiting factor of place growth. Adding CO2 in situations where all other variables are optimal will see large gains in yield and quality.

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Buyer's Guide

CO2 Enrichment

CO2 is one of the requirements for plant growth, along with water, nutrients, temperature and light. These five variables are the building blocks of photosynthesis. If any of these are missing or in short supply, it will act as a limiting factor to the rate of photosynthesis, which will slow plant growth. CO2 Levels are on the rise globally, with the Parts Per Million (PPM) of normal atmospheric conditions currently sitting just over the 300 ppm mark, up from about 270 ppm 40 years ago.


Plants can cope with up to 1400ppm before negative effects start to creep in - but the most efficient and effective level is around the 1000ppm mark since you’re within optimal levels of CO2 to facilitate plant growth, but you're not wasting any Co2 by producing more than you need. Above around 1000ppm you start getting diminishing yields from the Co2 produced so it requires more effort and resources for not much added yield.


Commercial horticultural production has been aware of the benefits of CO2 for many years, with numerous businesses choosing to use CO2 to maximise their yield on a large scale. With indoor small-scale set ups gaining increasing options to introduce CO2 into their garden, make sure you check out all our options to see which is the best for you.


CO2 is best used in closed loop systems otherwise your extraction system will vent the co2 before the levels have a chance to build up. In gardens that use an extraction system, you can run your fan on a controller so the air exchange is slower and the Co2 will have a chance to build to levels higher than the atmospheric average.


CO2 Bags

CO2 bags use a mass of fungus to produce CO2 for 6 continuous months - each bag covers a footprint of 1.2m2 so Co2 bags are the perfect options for smaller grow rooms and tents. Make sure you hang your Co2 bags above the lights as CO2 is denser than air and will fall onto your plants.


CO2 Bottles & regulators

We also offer Co2 in bottles with regulators that can be set to a particular PPM that is then maintained. Co2 bottles are perfect for medium to large indoor gardens and they offer more user options than Co2 Bags since the regulator can be set. Our Co2 regulators can be found online but due to the heavy, bulky nature of the Co2 bottles they’re only available in-store. Pop in store for more info or to have a look at our closed system that uses Co2 bottles. Our Co2 bottles are supplied to us as a by-product of the beer brewing industry so they are a fully renewable resource of captured Co2 that would otherwise be released into the atmosphere.


CO2 Burner

Co2 burners use propane or other burnable gas (such as butane) to create Co2. Burners also produce heat and water vapour so they can increase your environments heat and humidity which can be very useful during the colder months - but also potentially detrimental during flower as the added humidity can increase chances of infectious disease like botrytis attacking your crop. Co2 Burners also rely on non-renewable fossil fuels, so they’re less environmentally friendly than other sources of co2 enrichment.


If you’re unsure of what type of CO2 Enrichment can help you, get in touch with our specialist team who can advise you on the best system for your plant type, budget, experience level and space.

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