Co2 bags

[Dupa]

Rite on glad I asked instead of waste money thnx

 

[H8plow]

Saw the exhale co2 bags online anyone use m or sumthin similar am looking to add co2 to 4+4 tent

I use 1 exhale bag per 54 sq ft. Worked flawlessly, had great growth and CO2 ppm was just a tick over 900. Highly recommended