Exhale Homegrown CO2 Micro - CO2 Bag for Indoor Grow Rooms & Tents - CO2 for Grow Tents - Foliage Mushroom Bag - 1.5 lbs.

This bag activated roughly fast with the mycelium growth, I was expecting it to be much bigger but it's honestly all I need for the plants in my tent and it's working beautifully

It doesn’t take up a lot of space and it is very effective. Will buy again when the price goes back down.

The micro bag was definitely a waste of money, it puts off a fraction of co2...you would literally have to buy 8 bags just to see a difference and thats if you're only growing in a 2x4 tent...in my opinion it is way overpriced for how tiny it is. I've grown mushrooms for a long time and it is soooooo much cheaper to just make your own bags.

Took creativity to find a way to hang the bag in my grow tent. Will see how it all works out.

Expiration date showed it was expired when it came. However the material on bag looked fresh. Over time the brown material will grow mushroomy(white clumps) shows it is sucking in oxygen and kicking out the CO2 your looking for. Occasionally you may want to squeeze the bag and break up the brown material to allow more exposure to the oxygen so more CO2 can be released. Eventually whole bag will be filled with the white clumpy mushroom material. In which case it would be time to get another bag if you want to keep your plants exposed to more natural CO2.

Bought this as an experiment after having a conversation with a friend about using c02 in my grow tent, was skeptical but this bag has taking my plants from little guys to adults fast

Added this to my grow tent. Wow, what a difference in the growth rate. Would recommend this product to increase growth.

Thanks great product and packaging