Exhale Homegrown CO2 365 - Self-Activated Bag for Grow Rooms & Tents - Great for Indoor Grow Rooms - 4 lbs

Look out for gnats hatching inside bag. Just saw some inside the bag. Stuck in the bag peppermint soaked cotton ball to kill them. CO2 working fine. Just beware of gnats.

Great stuff, it took about three weeks to reach its max. Im using it in a 3×3 and my CO2 is ready well over 1700. My plants are eating it up and getting huge. I will be ordering more

Excellent product.

Mfg site says product is perfect for a 4x4x8 grow tent. Grow tents use high intensity lights that produce lots of heat; if you vent the heat in tent you also vent the additional CO2, negating the positive benefits of the increase in CO2. I purchased a CO2 meter to test, placed the bag plus meter in a small sealed area and it increased the ppm by more than 400 PPM. Placed CO2 in tent with an exhaust fan and meter and there was almost no additional increase in CO2 ppm. I ended up purchasing an additional grow light and got much better results.

It's been 10 days since installation. No increase in CO2 at all. Update So after 1 month it brings co2 up 200. So it does work

The bag works seen more growth on all my plants

Bag leaked and had mushrooms growing on the outside,

Arrived as it should have, not inoculated because that's the one I purchased. Very easy to hang, and seems pretty solid. A lot of these negative reviews are from people that do not understand what they ordered. Unless you specifically order the one that says "self activated", then you will receive one that has already been activated. For the ones claiming they received a bad one because it has white "mold" growing inside, uh that's the stuff that actually produces the co2. It's called mycelium. This is an excellent way of adding some co2. It's effective if used correctly. If not used correctly, or if your environment or plant health is trash to begin with, then this will not work for you at no fault of the product. I have reordered another one, and will continue to order these, as they are a way cheaper and much safer way to obtain a co2 boost for your plants environment.

Used in a 5x5, actually a bit oversized for that need. Product is super though.

Produkt Ablaufdatum endet im Dezember 22 somit keine 6 Monate

Das Produkt mag funktionieren jedoch nicht wenn der Verkäufer fast abgelaufene Ware versendet!!! Myzel ist grau und kaputt der ganze obere Teil feucht …. Frechheit

The bag dried up and stopped working after a few weeks waste of money and they always send out activated bags

Bonjour sur les deux exhale bag il n’y en a qu’un sur les deux qui c’est activé, il n’ai pas devenue blanc comme l’autre depuis que je l’ai acheter il n’a pas changé de couleur et il ne dégage presque pas de CO2 contrairement à l’autre qui produit la quantité normale de co2 vue le prix je suis dégoûtée la prochaine fois je les achèterai sur un autre site car sa fait environ 60 euros j’étais par la fenêtre. Bref je suis dégoûté .