Air

Air

Growing Marijuana in Rockwool

Almost all living beings are dependent on light of satisfactory quality. For humans, that means that sufficient oxygen must be present in the air, and that the air is not too polluted. For plants, and thus also for cannabis, it means good air […]

Humidity

Cannabis Grow Bible

Humidity The Cannabis Grow Bible

by Greg Green

Cannabis plants work best in the 40 – 80 percent relative humidity area. rH (relative humidity) is the amount of water in the air. Fresh air always is the best way to control humidity. If you have a rH […]

Instagram Feed