GEM-GARDEN Pack of 2 Smart Grow Bags Hydroponic Nutrients Co2 Bags for Grow Tents - Exhale Like Room Generator Bloom Large Root for Vegetables Fruits

Around 2 weeks each bag. Good little way to get co2 in the grow. Won’t find this cheap anywhere either.

thank you

Good value excellent

Always very good easy to use and it works

Fantastic product for the price which surprisingly works. My plants react noticeably well to this, your environment needs to be right though so if you follow VPD and ensure your temps and humidity are correct this product will work wonders.

Did not find any difference with these

Excellent value for money. My co2 meter is picking consistent levels above 1200 ppm. Will be buying again. Shame there isn't a bigger version!

Followed all instructions, temperature is about 23°C depending on light cycle, purely because I do not want to stress my plants. It does drop depending on house temp but only overnight. Humidity is over 50%RH most of the time. I stabbed the bag at the top in 6 positions as instructed. It's hanging above the plants as instructed. It's been hanging a week no measurable difference in CO2 levels. Added 1-2ml of water to the bag again as instructed... a slight hardening of the powder has occured but again, no measurable increase in CO2. Because of the measurables and the environment I grow my plants in, I will not be purchasing this again. In my experience, it has had no measurable impact to the CO2 levels in my growspace.