THE NATURAL CO2 SOLUTION
Our bags produce the same CO2 that Mother
Nature does, by design.
What is
exhale?
The Exhale is an idea that brings an important part of nature back to the indoor garden, CO2. Indoor gardening is a complex business and hobby. To do it right all the needs of a plant must be taken into consideration and more times than not, in an affordable way.
The ExHale bag is a patented strain of mycelium that produces an abundance of CO2 without fruiting. This means that when our bag is activated, the mycelium grows, eating the substrate it comes with, giving off heaps of CO2 straight into your garden, and it does all this for 6 months - guaranteed!
our co2 bags
natural. powerful. awesome.
The ExHale CO2 Bag
PRE-ACTIVATED READ TO USE
The Original ExHale CO2 Bag is the go-to solution for natural, no-fuss carbon dioxide enrichment in small to medium grow spaces. Designed for 4x4-foot areas or 128 cubic feet, it supports 4–6 plants throughout vegetative and flowering stages. Powered by a patented mycelial mass, it releases a steady stream of CO2 24/7 for six months—no refills, electricity, or maintenance needed. Just hang the bag slightly above your plants using the included freshness seal hanger, and let photosynthesis do the rest. Ideal for boosting yields and overall plant health, the Original is organic, made in the USA, and trusted by growers who want reliable, passive CO2 without complicated gear.
4 lbs
6 Months
Guaranteed!
6 months of
steady CO2
4 lbs
6 months of
steady CO2
1300ppm
Bag Dimensions
8" x 5" x 14"
4' x 4' sq ft
(120 cubic ft)
The ExHale 365 Bag
ACTIVATE WHEN YOU’RE READY!
The ExHale 365 CO2 Bag offers long-term CO2 supplementation with flexible activation, perfect for growers who like to plan ahead. Designed for 4x4-foot grow areas and 4–6 plants, the 365 bag features a separate mycelium and substrate system that extends shelf life until you’re ready to activate it. Once initiated, the mycelium colonizes the substrate over 30–45 days and then delivers steady CO2 for six full months. Maintenance-free and powered by nature, it enhances photosynthesis and plant growth without electricity or costly systems. With a built-in hanger for optimal canopy placement, this USA-made bag redefines convenience and control for indoor growers.
4 lbs
6 Months
Guaranteed!
6 months of
steady CO2
4 lbs
6 months of
steady CO2
1300ppm
Bag Dimensions
8" x 5" x 14"
4' x 4' sq ft
(120 cubic ft)
The XL Bag
OUR LARGEST BAG PRE-ACTIVATED AND READY TO USE
The ExHale XL CO2 Bag delivers large-scale CO2 output for bigger grow spaces and bigger yields. Designed for areas up to 36 square feet (6x6-foot), it supports 6–8 plants through every stage of growth with six months of consistent CO2 flow. Fueled by a powerful mycelial mass and an oversized design, the XL bag boosts photosynthesis and plant health with zero maintenance. There’s no setup, no electricity, and no equipment—just hang it slightly above your plants and let it work. Organic and made in the USA, the XL is perfect for growers who want more CO2 power and room to grow.
11 lbs
6 Months
Guaranteed!
6 months of
steady CO2
4 lbs
6 months of
steady CO2
1300ppm
Bag Dimensions
10" x 5" x 18"
6' x 6' sq ft
(288 cubic ft)
The XL 365 Bag
OUR LARGEST BAG THAT LASTS
EVEN LONGER
Built for serious cultivators, the ExHale XL 365 CO2 Bag combines the output of the XL with the shelf-life flexibility of the 365. Perfect for 6x6-foot spaces and 6–8 plants, it allows you to activate the mycelium on your schedule, with peak CO2 production arriving after a 30–45 day colonization period. Once active, it delivers six months of consistent CO2 output, supporting vigorous growth from veg to flower. Designed for growers who need planning flexibility and bigger yields, the XL 365 is maintenance-free, made in the USA, and powered entirely by nature. Hang it above your canopy and let it handle the rest.
11 lbs
6 Months
Guaranteed!
6 months of
steady CO2
4 lbs
6 months of
steady CO2
1300ppm
Bag Dimensions
10" x 5" x 18"
6' x 6' sq ft
(288 cubic ft)
The ExHale MAX Bag
OUR LARGEST BAG WITH MAXIMUM
CO2 OUTPUT
The ExHale MAX CO2 Bag delivers maximum CO2 flow with an extra-wide breather patch for high-demand grow spaces. Designed for 6x6-foot areas and 6–8 plants, it offers an intense four-month burst of CO2 production, ideal for rapid vegetative and flowering growth. Like all ExHale bags, the MAX requires no electricity, refills, or maintenance—just hang it above your canopy and let the mycelial mass do its work. Engineered for serious growers who want immediate and powerful CO2 support, the MAX is organic, USA-made, and tailored to drive stronger, faster plant development through turbocharged photosynthesis.
11 lbs
6 Months
Guaranteed!
6 months of
steady CO2
4 lbs
6 months of
steady CO2
1500ppm
Bag Dimensions
10" x 5" x 18"
6' x 6' sq ft
(288 cubic ft)
The ExHale MAX 365 Bag
OUR LARGEST BAG WITH MAXIMUM
CO2 OUTPUT
The ExHale MAX 365 combines the high-output power of the MAX with the delayed-activation of the 365 series, giving you full control and serious performance. Ideal for 6x6-foot areas and 6–8 plants, this bag starts producing CO2 after a 30–45 day activation period, then runs at peak output for four months straight. Its oversized breather patch ensures a high flow rate, perfect for pushing growth during critical vegetative and flowering stages. No electricity, no maintenance, and no stress—just place it above your plants and let it go. Made in the USA and fueled by nature, the MAX 365 is built for growers who need more when it matters most.
11 lbs
6 Months
Guaranteed!
6 months of
steady CO2
4 lbs
6 months of
steady CO2
1500ppm
Bag Dimensions
10" x 5" x 18"
6' x 6' sq ft
(288 cubic ft)
The Micro Bag
FOR CLONE DOMES AND
SMALL GROW SPACES
The ExHale Micro CO2 Bag is made for your smallest, most delicate plants—seedlings, clones, and cuttings. Compact yet powerful, this bag fits neatly inside standard propagation trays with domes, providing a gentle stream of CO2 for up to three months. Designed for compact spaces, the Micro helps early-stage plants develop strong roots and healthy growth by boosting photosynthesis. Powered by a potent mycelial mass and a microporous breather patch, it requires no setup, electricity, or maintenance. Just set it in your tray, cover with a dome, and let nature do the work. Organic, made in the USA, and perfect for starting strong.
2 lbs
3 Months
Guaranteed!
6 months of
steady CO2
4 lbs
3 months of
steady CO2
1000ppm
Bag Dimensions
8" x 5" x 3"
1' x 1' sq ft
1 cubic ft)
what people
are saying
Easy to use and my plants love them! I couldn't be happier with the product!! It will always be a staple in my garden. Check out my page for the results
@chicagogrows
I’m noticing they are bigger in flower this round. I’ll see when they’re done. I thought I would have about 2’ between light and tops, but nope. Only about1
@fingerhash
I will be ordering more I love your products
@fmizzflo420grow
features
Each ExHale bag is created with a purpose, and each feature has a goal. We have designed and refined our bags to
withstand the challenges and strains that come with indoor gardening, small to large.
Breather Patch
The exhaust port of our bags. The microporous breather patch allows CO2 to exit the bag and also keep contaminants out.
Plastic
We use a hardy plastic to resist puncture and subsequently contamination.
Substrate
Our substrate is a proprietary formula designed to give the CO2 producing mycelium a food source for the long haul.
Mycelium
Our mycelium is a patented strain of non-fruiting, high CO2 producing fungi that love bringing nature back to indoor gardens.
ExHale came out of a true love of agriculture and out of the need for a less expensive, easier, safer and more harmonious way to provide your plants with CO2.
- Glen Babcock (Owner of ExHale CO2)
The Original
CO2 is not new to indoor gardening, its been around for decades. We are the first company to design a mushroom bag in order to bring natural CO2 to the market. Since our debut, we have seen many knockoffs, some that do it entirely wrong, and some that try to copy our bags all the way from the plastic we use all the way down to our patented genetics. Still, none can match our quality. 'The Original CO2 bag' seal is our way of making sure you know that you are getting the quality you pay for. - We are the original CO2 bag, don't settle for anything less.