ExHale 365 Self Activated CO2 Bag

Self-Activated CO2 Bag Built for Extended Pre-Use Shelf Life

Buying CO2 bags ahead of a grow cycle usually means racing a fixed production clock before the plants are even in the room. The ExHale 365 solves that with a self-activated design that keeps the mycelium and substrate separated inside the bag until the grower is ready to use it, extending shelf life well beyond a standard pre-activated bag.

Once separated, the 365 enters a colonization period before reaching peak CO2 output, then continues producing CO2 for months afterward through the same microporous breather patch used across the ExHale line. It's sized for a 4x4 ft or 128 cubic ft grow space and requires no electricity, heat, or refills at any stage.

Key Features & Benefits

• Self-activation on demand — a separated mycelium and substrate design lets the grower start the clock by triggering activation, not the purchase date.
• Extended pre-activation shelf life — designed to sit unopened for longer than a standard pre-activated ExHale bag before it needs to go into a grow space.
• Colonization period before peak output — after activation, the mycelial mass colonizes the substrate before reaching peak CO2 production.
• No electricity required — operates with no power, heat, or CO2 generation equipment of any kind, before or after activation.
• Made in the USA — manufactured domestically by ExHale using the same mycelial CO2 technology as the Original and XL.
• 4x4 ft coverage after activation — once active, covers the same 4x4 ft or 128 cubic ft footprint as the ExHale Original.

Who Should Use the ExHale 365

The 365 fits growers who want to buy CO2 bags ahead of time without racing a fixed production window before plants are even ready for supplementation. It's a practical choice for anyone stocking multiple grow cycles' worth of bags in advance rather than reordering right before each one starts.

How the 365's Activation Differs from the Original and XL

Unlike the Original and XL, which are pre-activated and start producing CO2 as soon as they're unsealed, the 365 keeps its mycelium and substrate separated until the grower manually activates it. That separation is what extends the bag's shelf life before use. After activation, the 365 goes through a colonization period before reaching peak CO2 output, then continues producing CO2 using the same breather-patch mechanism as the rest of the ExHale line.

Frequently Asked Questions

How is the 365 different from the Original and XL?

The Original and XL are pre-activated and start producing CO2 immediately once unsealed. The 365 instead keeps mycelium and substrate separated inside the bag, so it holds a longer shelf life before the grower triggers activation.

How do I activate the ExHale 365?

Activate the 365 by separating the internal seal per the included instructions, which brings the mycelium into contact with its substrate. That seal doubles as a hanging hook once the bag is activated and ready to hang.

How long does the 365 take to reach peak CO2 output?

After activation, the bag goes through a colonization period before hitting peak CO2 production. This is a normal part of the self-activation process and isn't a sign anything went wrong with the bag.

When should I activate the 365 relative to my grow cycle?

Activate the bag a few weeks before you expect plants to need CO2 supplementation, since it needs a colonization period to reach peak output. Growers who buy several bags in advance can activate them on a staggered schedule to line up with successive grow cycles.

Does the 365 need electricity or refilling?

No, like the rest of the ExHale line it requires no electricity, heat, or refills, either before or after activation. It operates entirely through the mycelial mass sealed inside the bag.