Exhale Homegrown CO2 365 Self-Activated Bag - 4 lbs for Grow Tents

In this review the ExHale Homegrown CO2 365 is evaluated for small indoor growers who want a low-effort way to boost CO2 in tight spaces. The bottom line: this self-activated CO2 bag is simplest for hobbyists running a 4x4 ft or similar grow tent who prefer a maintenance free, no-electricity solution; it delivers a steady CO2 supply for months and can increase growth when conditions are otherwise optimal. The review focuses on ease of use, lifespan claims, and real user feedback about CO2 levels and longevity.

Key Features

• Self-activated design: The ExHale 365 activates without heat or electricity, so growers can start CO2 production by following a short activation step.
• Long running period: The bag is designed to provide CO2 for up to 9 months in a 4x4 ft or 128 cubic foot space, with 6 months of peak output for critical growth phases.
• Maintenance free placement: Once hung slightly above the canopy the bag produces CO2 continuously with no daily attention required.
• Compatibility with standard grows: Suitable for both vegetative growth and flower/fruit stages, so it can be left in the tent through multiple cycles.
• Simple activation hanger: The supplied separation seal doubles as a hanger so activation and placement are straightforward.

Who It's For

The ExHale 365 is best for home growers using small tents or closets roughly 4x4 ft (about 128 cu ft) who want a hands-off CO2 source without installing tanks, regulators, or electric systems. It fits those who value simplicity and a product that requires no plumbing or power.

It is less suitable for large commercial rooms, growers who need tightly controlled ppm measurements, or anyone who cannot tolerate any risk of contamination, since some user reports mention variable CO2 output and occasional mold concerns. Those needing precise, adjustable CO2 control should consider cylinder or timed systems instead.

Pros & Cons

Pros

• True maintenance free operation once placed, making it easy for busy hobbyists.
• Claims of 9 months total CO2 with 6 months of peak production aligns with long-term use without frequent replacement.
• No electricity or heat required, so it integrates into passive or tent-based grows easily.
• Simple activation and hanger reduce setup mistakes for first-time users.

Cons

• CO2 production and overall effectiveness are reported as mixed by some customers, so results can vary by environment.
• A few users noted concerns about mold growth, so placement and cleanliness of the grow space remain important.

Specifications

Product name	ExHale Homegrown CO2 365
Type	Self-activated CO2 bag
Coverage	4x4 ft / 128 cubic ft space
Duration	9 months CO2 total, 6 months peak
Weight	4 lbs
Power	No heat or electricity required

Our Verdict

The ExHale 365 is a practical, value-oriented option for small tent growers who want an easy, maintenance free CO2 boost without wiring or tanks. It offers months of steady CO2 and is worth trying if you run a 4x4 ft space and accept some variability in output; those needing precise ppm control or who have had mold issues should evaluate other systems.

Frequently Asked Questions

How long does the bag provide CO2?
The manufacturer states the bag produces CO2 for 9 months total with about 6 months of peak output.

Do I need electricity or heat to use it?
No, the ExHale 365 is self-activated and operates without electricity or added heat.

Will it increase yield?
When used in compatible conditions and paired with good lighting and nutrients, users report potential growth increases, though results vary.