ExHale CO2 Bags

£34.95 £54.95

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exhale logoExhale CO2 Bags

The Exhale CO2 bag cultivates carbon dioxide 24 hours a day with no need to refill bottles or use expensive production units. Maintenance Free: No heat, No electricity, Just CO2.

How They Work

The CO2 bags 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 maximize the process of photosynthesis, the result is larger plants with larger yields.

The power lies in the mycelial mass inside the vented cultivator. This mycelial mass cultivates carbon dioxide and the one-way breather patch releases CO2 continually for up to 6 months.

The regular sized Exhale CO2 bag is designed for small to medium grow spaces, or more specifically 1 bag will provide 4-6 plants with the CO2 they need. It can be used for both vegetative plant growth as well as for fruit and flower production.


How to use Exhale CO2 Bags

How to Use CO2 bagsExhale CO2 bags come complete and are cultivating carbon dioxide even before you get out of the checkout line. No need to turn it on or turn it off, simply place it in your grow space and leave it alone to do its job.

A continuous shower of carbon dioxide directly onto your plants is the most efficient way to deliver CO2. Placing the bag slightly above the level of your plants will insure they receive the carbon dioxide they need 24 hours a day for up to 6 months. This is a revolution in your indoor carbon dioxide production systems.


Directions for Use

  • Place the Exhale CO2 bag slightly above the height of the plants in your grow space. Carbon dioxide being heavier than air will precipitate downward towards your plants.
  • You will notice a change in appearance of the mycelial mass. Over time it will take on a whitish look which is normal. CO2 will continue to be produced for up to 6 months.
  • Depending upon the conditions the bag may inflate, however this is not an indication of performance. If the mycelium is growing the CO2 is flowing.
  • The bag is 100% recyclable. Simply remove the contents and mix into your compost pile or use as a soil amendment. The bag can be recycled through your local plastic recycler.

DO NOT OPEN the Exhale CO2 bag, doing so will interrupt the cultivation of CO2 and possibly contaminate the mycelial mass. DO NOT REMOVE THE FILTER PATCH


Now Temperature Controlled Storage to Guarantee Freshness

Cold Stored ExhaleExhale CO2 bags are now stored in an optimal temperature controlled environment. The cooler storage rapidly reduces the rate of growth of the mycelium, preventing the full colonisation whilst in storage and saving the precious CO2 production for when it is needed most, after purchase from your Grow Store. The optimal temperature slows down the rate of reproduction whilst in storage and then once exposed to warmer temperatures kicks back in when sent from our warehouse. This maintains the freshness of the CO2 bag and guarantees 6 months of CO2 from the date of purchase. The colonisation over time can be seen in the time lapse video below.


Free Hanger

Exhale Co2 Bag Hanger
Our Exhale CO2 bags now come with a free Exhale patented hanger, making it easier to maximise the efficiency of your bag with perfect placement. What’s more the hangers come attached below the Exhale one way breather patch ensuring that there is no migration of mycelium through the filter. When the Exhale CO2 bag is ready to use simply move the hanger above the breather patch as demonstrated in the diagram and video below.

Exhale Hanger Instructions

My bag is a brown colour is this OK?

“The brown colour is the substrate and the white is the mycelium. It is best to use the replace by date when judging the age of the bag. The filter releases carbon dioxide at a set rate whether the substrate is brown or white. This video shows an Exhale CO2 bag in its first 4 weeks of carbon dioxide production. Most bags turn white and stay that way, while some may turn white and then turn a different shade of brown, usually more of tan colour.”

Exhale Breathe Advert

  • Now Temperature Controlled to Guarantee 6 months CO2 from purchase in store
  • Free Exhale Hanger with every bag
  • Exhale CO2 bags let your plants breath, naturally
  • Plants growing indoors under artificial light often lack enough CO2 to efficiently photo-synthesise.
  • When plants are able to maximize the process of photosynthesis, the result is larger plants with larger yields.
  • The exhale CO2 bags are generating carbon dioxide right from purchase
  • One way breather patch releases carbon dioxide 24 hours a day for 6 months
  • No heat, no electricity.. Just carbon dioxide
  • Designed for small to medium grow spaces
  • Available in Regular (1.2m x 1.2m) or Extra Large (1.8m x 1.8m)
  • Simply place the bag in your grow space and leave it alone to do its job



Additional information


Regular (1.2m x 1.2m), Extra Large (1.8m x 1.8m)


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