10 Best Co2 Bags For Grow Tents [2025]
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Finding the best CO2 bags for grow tents can be a daunting task, especially with the myriad of options available on the market. To help streamline your search, we meticulously shortlisted ten top products based on factors such as effectiveness, ease of use, and customer satisfaction. Our curated list not only saves you valuable time but also reduces the hassle of navigating through countless reviews, allowing you to make an informed decision for your growing needs effortlessly.
Top 10 Best Co2 Bags For Grow Tents In The Market
Best Co2 Bags For Grow Tents Review
Bestseller No. 1
Exhale Homegrown CO2 365 - Self-Activated Bag for Grow Rooms & Tents - Great for Indoor Grow Rooms - 4 lbs
- SELF-ACTIVATED - ExHale 365 is a self-activated version of the Original CO2 Bag.The 365 will provide a 4x4 foot or 128 cubic foot space with CO2 for 9 months of which 6 months are peak production. This product is great for small grow rooms and grow tents that are looking to produce more CO2 than what you’d normally have.
- EXPERIENCE A LARGER YIELD - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat or electricity.
- MAINTENANCE FREE - Place the ExHale bag slightly above the height of the plants in your grow space. CO2 being heavier than O2 will precipitate downward towards your plants. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA.
- PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent and let it do its thing.
- DIRECTIONS - Remove hanger from bag. allow the material in the upper spawn pod to fall to the sterilized substrate below by gently moving the spawn pod down to the lower part of the bag. Re-attach the hanger by placing it above the filter patch. The Exhale bag can now be placed in your garden.
Bestseller No. 2
The Exhale Homegrown CO2 Bag (Small)
- GREAT FOR SMALL GROW ROOMS - The Original ExHale CO2 Bag will provide a 4x4 foot or 128 cubic foot space with CO2 for 9 months, of which 6 months are peak production. This product is great for smaller grow rooms and grow tents that are looking to produce more CO2 and catalyze growth.
- EXPERIENCE A LARGER YIELD - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat or electricity.
- MAINTENANCE FREE - Place the ExHale bag slightly above the height of the plants in your grow space. CO2, being heavier than O2, will precipitate downward towards your plants. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA.
- PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent and let it do its thing.
- DIRECTIONS - Remove hanger from bag. Fold the top of the bag over and re-attach the separation seam hanger by placing it above the filter patch. The Exhale bag can now be placed in your garden.
Bestseller No. 3
ExHale Homegrown CO2 Original - CO2 Bag for Indoor Grow Rooms & Tents - Great for Indoor Grow Rooms - CO2 for Grow Tents - 4 lbs. (2 Pack)
- GREAT FOR SMALL GROW ROOMS - The Original ExHale CO2 Bag will provide a 4x4 foot or 128 cubic foot space with CO2 for 9 months, of which 6 months are peak production. This product is great for smaller grow rooms and grow tents that are looking to produce more CO2 and catalyze growth.
- EXPERIENCE A LARGER YIELD - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat or electricity.
- MAINTENANCE FREE - Place the ExHale bag slightly above the height of the plants in your grow space. CO2, being heavier than O2, will precipitate downward towards your plants. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA.
- PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent and let it do its thing.
- DIRECTIONS - Remove hanger from bag. Fold the top of the bag over and re-attach the separation seam hanger by placing it above the filter patch. The Exhale bag can now be placed in your garden.
Bestseller No. 4
CO2BAG® M – Natural CO₂ Generator for Indoor Plants & Greenhouses | Boosts Growth, Yield, Taste & Color | Compact, Safe & Maintenance-Free
- Accelerated Plant Growth & Higher Yields: Consistent CO₂ supply helps plants photosynthesize more efficiently, leading to faster growth, quicker fruit ripening, and bigger, healthier harvests.
- Effortless & Maintenance-Free: No tanks, regulators, or electricity required. Just hang the bag in your grow space and enjoy natural CO₂ enrichment for weeks.
- Safe for Plants & People: Releases CO₂ steadily and safely, creating the ideal growing environment for indoor grow rooms and greenhouses without risk.
- Compact Yet Powerful: Effective for areas up to 2m² (for size M), making it the perfect solution for hobby growers, small tents, or compact greenhouses. It’s a budget-friendly alternative to expensive CO₂ systems.
- Satisfaction Guaranteed: We stand behind the effectiveness of every CO2BAG. If you’re not fully satisfied with the results, we’ll make it right — grow with confidence.
Bestseller No. 5
CO2BAG® M for Effective Growth | Improves Taste, Color & Yield | Compact & Maintenance-Free for Indoor Growing and Greenhouses. -2-Pack-
- CO2bag is very small and easily affordable bag producing carbon dioxide for your plants.
- Increases the growth rate of your plants, accelerates the ripening of the fruit
- CO2bag is safe to use, easy to setup without any maintenance required.
- 100% satisfaction quarantee of all our products!
- Recommended room size for one CO2BAG M is up to 22 ft2
Bestseller No. 6
Exhale Homegrown CO2 XL - CO2 Bag for Indoor Grow Rooms & Tents - CO2 for Grow Tents - Foliage Mushroom Bag - 11 lbs.
- TWICE AS MUCH CO2 - The Exhale CO2 XL bag is over twice the size of the regular Exhale CO2 bag. This means that the bags will exhale more than twice the amount of CO2 over the same 6 month lifespan, and can therefore cover a much larger growing space.
- EXPERIENCE 2X THE GROWING POWER - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat or electricity.
- MAINTENANCE FREE - Place the ExHale bag slightly above the height of the plants in your grow space. CO2 being heavier than O2 will precipitate downward towards your plants. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA.
- PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent and let it do its thing.
- DIRECTIONS - Remove hanger from bag. Fold the top of the bag over and re-attach the separation seam hanger by placing it above the filter patch. The Exhale bag can now be placed in your garden.
Bestseller No. 7
Exhale Homegrown CO2 Micro - CO2 Bag for Indoor Grow Rooms & Tents - CO2 for Grow Tents - Foliage Mushroom Bag - 1.5 lbs.
- FOR SMALL GROW ROOMS - The Micro bag will provide a small (2x2' or 3x3') grow space with CO2 for up to 3 months. This product is designed for small grow rooms and grow tents that are looking to boost CO2 production.
- EXPERIENCE A LARGER YIELD - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat or electricity.
- MAINTENANCE FREE - Place the ExHale cultivator slightly above the height of the plants in your grow space. CO2 being heavier than O2 will precipitate downward towards your plants. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA.
- PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent and let it do its thing.
- DIRECTIONS - To use the Exhale bag, you simply place the bag above the canopy of your plants. CO2 is heavy and will fall downwards toward your plants. If you are running ventilation, you should place the bag down low close to the fresh air intake. The CO2 will be drawn up through the canopy and utilized by the stomata on the leaves before being exhausted.
Bestseller No. 8
Myco Labs Co2 Boost Self-Activated Mushroom Grow Bag for Plants, Grow Rooms & Tents 2.0
- New Easy Activation Method with no external clip!
- Produces CO2 for 10 months
- 1 Bag supplies Co2 for 4x4 Grow Tent
- Grow & Harvest Oyster Mushrooms on month 11-12
Bestseller No. 9
ExHale Homegrown CO2 Micro (2 Pack) - CO2 Bags for Indoor Grow Rooms & Tents - CO2 for Grow Tents - Foliage Mushroom Bags - 1.5 lbs. Each
- GREAT FOR SMALL GROW ROOMS - The Micro bag will provide a small (2x2' or 3x3') grow space with CO2 for up to 3 months. This product is great for small grow rooms and grow tents that are looking to produce more CO2 than what you’d normally have.
- EXPERIENCE A LARGER YIELD - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat or electricity.
- MAINTENANCE FREE - Place the ExHale cultivator slightly above the height of the plants in your grow space. CO2 being heavier than O2 will precipitate downward towards your plants. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA.
- PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent and let it do its thing.
- DIRECTIONS - To use the Exhale bag, you simply place the bag above the canopy of your plants. CO2 is heavy and will fall downwards toward your plants. If you are running ventilation, you should place the bag down low close to the fresh air intake. The CO2 will be drawn up through the canopy and utilized by the stomata on the leaves before being exhausted.
Bestseller No. 10
CO2BAG® XL – Natural CO₂ Generator for Indoor Plants & Greenhouses | Boosts Growth, Yield, Taste & Color | Compact, Safe & Maintenance-Free
- Accelerated Plant Growth & Higher Yields: Consistent CO₂ supply helps plants photosynthesize more efficiently, leading to faster growth, quicker fruit ripening, and bigger, healthier harvests.
- Effortless & Maintenance-Free: No tanks, regulators, or electricity required. Just hang the bag in your grow space and enjoy natural CO₂ enrichment for weeks.
- Safe for Plants & People: Releases CO₂ steadily and safely, creating the ideal growing environment for indoor grow rooms and greenhouses without risk.
- Compact Yet Powerful: Effective for areas up to 3m² (for size XL), making it the perfect solution for hobby growers, small tents, or compact greenhouses. It’s a budget-friendly alternative to expensive CO₂ systems.
- Satisfaction Guaranteed: We stand behind the effectiveness of every CO2BAG. If you’re not fully satisfied with the results, we’ll make it right — grow with confidence.
Wrapping Things Up
In conclusion, selecting the best CO2 bags for grow tents can significantly enhance the growth and yield of your plants. In this article, we meticulously evaluated various options based on criteria such as effectiveness, ease of use, and customer feedback. Our selection of the top ten CO2 bags takes into account the diverse needs of growers, ensuring that each product included provides the best possible results in a grow tent environment.
By following our list, you can make an informed decision that aligns with your specific growing conditions and goals. Whether you are an experienced cultivator or a novice gardener, the right CO2 bag can create a more conducive atmosphere for plant growth, leading to healthier plants and potentially increased yields. Investing in one of these recommended CO2 bags will not only enhance your growing experience but also contribute to the overall success of your indoor gardening endeavors.
