What Is Exhale XL CO2 Bag?

A patented strain of mycelium that produces large amounts of CO2 without fruiting. Once the bag is activated, the mycelium grows, eating the substrate in comes with, releasing CO2 into your grow area, for up to 6 months.

This is the larger version. There is also a smaller version here. 

Why Choose Exhale XL CO2 Bag?

You are looking for a simple solution to increase CO2 production in your grow space.

How To Use Exhale XL CO2 Bag?

Remove the plastic stick to activate the bag and it wills start to work.