Tag Archives | thermometer

vapor pressure deficit

Vapor Pressure Deficit Vs. Relative Humidity for Your Marijuana Grow Room

Why should indoor marijuana growers understand vapor pressure deficit? Because vapor pressure deficit affects whether your plants can breathe or not! Vapor pressure deficit readings (VPD) tell you precisely how atmospheric factors are affecting your cannabis plants’ ability to take in and transpire water. The pressure differential between the inside of your plants and their […]

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marijuana growing tools

Essential Marijuana Growing Tools Every Grower Needs

No matter what kind of marijuana grow room or garden you run, here’s the minimum basic marijuana grower toolkit you want to have: A reliable pH and parts per million (EC or TDS) meter. After years of wasting money on cheap pH and PPM meters, I found the only one that works well: the BlueLab […]

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