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ExHale CO2 Original Grow Bag - Patented Mycelium Strain for Indoor Grow Rooms, & Carbon Dioxide Enrichment - CO2 for Grow Tents - Boosts CO2 Production for 6 Months - 4 lbs. (1 Pack)

  • Based on 2,198 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Garden City Fungi

Arrives Saturday, Jul 11
Order within 21 hours and 47 minutes
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Size: 1 Pack


Features

  • PASSIVE CO2 PRODUCTION - The Original ExHale CO2 Bag will provide a 4x4 foot or 128 cubic foot space with CO2 for up to 9 months, of which 6 months are peak production. This product is ideal for smaller grow rooms and grow tents that are looking to produce more CO2 and catalyze plant and vegetative 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, electricity or complicated gear. Curated for indoor growers, hobby gardeners and greenhouse enthusiasts.
  • 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 Original CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA. Use it as a natural alternative to electric CO2 generators and equipment.
  • 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. Works best with controlled airflow and ventilation; optimal results in sealed or semi-sealed environments. A must-have for serious growers.
  • EASY-TO-FOLLOW 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. Avoid compressing or folding the bag when hanging.

Description

Photosynthesis is the process by which plant leaves make carbohydrates. Sunlight, CO2 and water are converted into carbohydrates and O2 by the action of chlorophyll in the chloroplasts of the plant. Plants growing indoors under artificial light often lack enough CO2 to efficiently photosynthesize. When plants are able to maximize the process of photosynthesis, the result is larger plants with larger yields. ExHale cultivates CO2 24 hours a day with no need to refill bottles or use expensive CO2 production units. The power of ExHale lies in the mycelial mass inside the vented cultivator. This mycelial mass cultivates CO2 and the one-way breather patch releases CO2 continually for up to 6 months. The ExHale Cultivator is designed for small to medium grow spaces , or more specifically 1 ExHale Cultivator will provide 4-6 plants with the CO2 they need. ExHale can be used for both vegetative plant growth as well as for fruit and flower production. How to Use ExHale CO2 Bags ExHale comes complete and is cultivating CO2 even before you get out of the checkout line. No need to turn it on or turn it off, simply place the ExHale CO2 bag in your grow space and leave it alone to do its job. A continuous shower of CO2 directly onto your plants is the most efficient way to deliver CO2. Placing the ExHale Cultivator slightly above the level of your plants will insure they receive the CO2 they need 24 hours a day for up to 6 months. ExHale-Homegrown CO2 is a revolution in indoor CO2 production systems.

Brand: Exhale


Color: Brown


Item Weight: 3.2 Pounds


Chamber Volume: 128 Cubic Feet


Frame Material: Plastic


Item Weight: 3.2 Pounds


Chamber Volume: 128 Cubic Feet


Capacity: 128 Cubic Feet


Color: Brown


EU Spare Part Availability Duration: 9 Months


Frame Material: Plastic


Inner Material: Mylar


Brand Name: Exhale


Global Trade Identification Number: 02


UPC: 598342999002 793573065933


Manufacturer: ExHale CO2


Model Number: EXHALE


Manufacturer Part Number: 103380


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • THEY WORK GREAT FOR GROW TENTS & SMALL GROW SETUPS THEY WORK GREAT FOR GROW TENTS & SMALL GROW SETUPS
Size: 2 Pack
I've purchased several of these in the past few years , and have had different levels of c02 output . I have always used anywhere from 2-6 of them at a time . I've found that they work the best in an environment that has medium humidity (35-60%) and good air flow . I have 4 small fans running and a CFM exhaust fan pulling a decent amount of air through the tent . I purchased a highly reviewed meter to monitor my c02 , and its been enlightening to watch these bags put out some high numbers . I was shocked when I finished up my first grow , and seen I had nearly 1400 ppm . I then saw that all 3 bags were in perfect activation. , The bags had been really been supplying a substantial about of c02 all along , even though my meter was showing lower numbers mid to late in flower . The trick is purchase 1 or 4 and activate at the start of a grow . I have seen my numbers rise a little in the first 4 weeks after activation, but the magic REALLY HAPPENS ONCE THE BAG IS PUFFED UP . It usually takes at least 30-40 days before these are really starting to work optimally. ( This is just from my personal experience ) CONS- I have had a couple show up damaged before , from transport I assumed . I had an XL sized c02 bag show up that never seem to really get with the program. It changed to white and showed familiar activation symptoms , but always just limply flopped over at the top . I could see someone , first purchasing a bag , possibly having a little trouble figuring out how to activate correctly and hang , but really you just gotta follow the instructions. Its quite simple and easy . Altogether , this is an amazing product . I'm sure there are home remedies to achieve c02 output , but these bags have absolutely been effective in my setup. I wish they were a smidgen cheaper , but I understand people need to make a living . One day I might upgrade to a tank system , but in the meantime these nifty C02 mushroom bags will do. ... show more
Reviewed in the United States on January 7, 2026 Reviewed in the United States on January 7, 2026 by Patrick

  • Works good
Size: 1 Pack
This worked good in my grow tent. Best grow i ever had!
Reviewed in the United States on May 26, 2026 by Joe g

  • So many confidently incorrect reviews. These are a great addition.
Size: 1 Pack
I’ve been using these bags for years and although they won’t do the work of an expensive tank, I absolutely notice elevated ppm in a 4x4 ranging from 600-850. Those complaining about “used” or already activated bags should have paid closer attention. Exhale offers the option of self activating bags or bags that have been pre activated. The reviews complaining about mold are inaccurate. The white growth is mycelium colonizing the substrate. That’s what is producing CO2. People complaining about getting what they ordered and then complaining that it’s worthless simply because they don’t understand what they bought or how it works. Many of these reviews are confidently incorrect. These bags are a nice addition to dialed in environmental conditions. If your temperature, vpd, DLI, watering protocols are off, supplementing CO2 will be much less effective. Also if your exhaust fan is regularly running on high, then any type of supplemental CO2 will be ineffective. The ppm won’t rise and CO2 won’t fall onto your canopy because it is being blasted out before it can even be detected. ... show more
Reviewed in the United States on March 5, 2025 by Youngson

  • Actually seems to make a big difference
Size: 1 Pack
My plants have been growing out of control since I added this to the tent! Even doing LST has become difficult. Stems so thick they’ve become difficult to bend to keep a flat canopy. Fits in my 4x2 great. Great price for how effective it is. I have heard very mixed reviews and I do believe they may not work for certain growers due to environmental issues, genetics or unintentional plant health issues but does increase c02 according to my meter. Bumping up light intensity to accompany the extra c02 may be what other growers are missing? Maybe some bags or duds? I can’t say for sure but it 100% works for me and I will buy more! ... show more
Reviewed in the United States on May 9, 2026 by Boysel's

  • NOT DEPENDABLE OR CONSISTENT
Size: 2 Pack
don`t waste your money, sometimes puts out some CO2. not dependable , no customer service, no e-mail or phone message returned. 2 bags in 6 x 8 sealed room ,after a week i had 420 ppm. me breathing puts out way more CO2NOT
Reviewed in the United States on June 10, 2026 by Julie

  • Worked great will definitely buy again
Size: 2 Pack
Love these worked out great
Reviewed in the United States on May 6, 2026 by Robert Simonton

  • My plant grew 3" in 3 days after being stuck at 13" for a month!!! My plant grew 3" in 3 days after being stuck at 13" for a month!!!
Size: 1 Pack
BRO SCIENCE! the critics proclaimed. "Unless you have 1000w light, you're never going to get plants to benefit from Exhale!" Guess what? I bought the regular Exhale for my little tent. It's inoculated at the manufacturing facility and ready to go when it arrives. My severely stunted and abused Cannabis plant, which had been stuck for a month without growing no matter what I did, grew 3" in 3 days and large leafs are forming. You can also order Exhale 365, which you get to inoculate yourself by squeezing a spawn pod into the bag. The only thing is it takes a couple of weeks to really get going. I keep my 2x2 tent a little warmer than most, around 80-83F. Exhale likes it warm. A 6" vivosun oscillating fan runs continuously so all the little leaves and necks wiggle and get stronger. It's my first grow and I think an ExHale bag will be involved with all future grows. The bag I bought from Amazon arrived on the cusp of its date, and the man who invented the bag offered to replace with a fresher bag but I declined as I don't have that many months to grow. I bought it mid-January and its Expiry date is in June. It's supposed to last 6 months. When you aren't growing, you can put the bag somewhere cool and dark and it will rest. ... show more
Reviewed in the United States on January 31, 2024 Reviewed in the United States on January 31, 2024 by Placeholder

  • Exhale365 is a winner this one is Meh Exhale365 is a winner this one is Meh
Size: 2 Pack
Not completely sold on these ones. I normally use Exhale 365 which have a slower but longer release. I now have two inside a 40x40x76 tent and other then first day when one bag read at 1200ppm they are only showing 500-550ppm and that’s with two bags. I just shared the current reading tents been closed last 16hrs. ... show more
Reviewed in the United States on April 13, 2026 Reviewed in the United States on April 13, 2026 by Superfinechef

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