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

So the first 365 bag I received appeared mostly used up, as the mycelium had already colonized the substrate. I requested a replacement which came promptly and the second bag looks fresh with no colonization. I will update this review for performance in a few weeks but as of now I have high hopes for this product. UPDATE!! So I posted a picture of the numbers I'm getting from my tent after one week with the new bag. These bags appear to be very effective just make sure it shows up fresh and not partially populated. Good product

Provides a noticeable difference starting seedlings for spring planting

Used for the first time and loved it!! WHAT A DIFFERENCE in size and quality and yield great product!! JUST BOUGHT A NOTHER BAG, IT'S GOOD FOR 9 MONTHS 6 AT FULL STRENGTH.. THANKS LOVE IT..

Used them before good product

They produce CO2 for about 3 months to 6 months I think, but while it's producing it really pumps it out, and the plants absolutely love it! Would definitely recommend!

This is the second bag I bought and the stupid hangers break to easy. If the bag falls or gets a hole in it it’s over. However it does produce co2 as specified. Just need slightly better materials

So far I like everything about the product. It raised my PPM in my tent from 400 to 1300. That's exactly what I needed in my grow tent. I definitely would buy again

The Exhale CO2 bags are part of every grow, you can see the increase in yields! Fast shipping, I had a small hiccup with my order and TD Supply Corp. fixed it fast, no hassles, I highly recommended this seller!