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Common Abbreviations

HID, HPS, MH? Here's a quick run down of what these acronyms actually mean.


  • High Intensity Discharge

    • A group of lamps consisting of mercury vapour, metal halide, high pressure sodium, and low pressure sodium lamps.

      • HPS: High Pressure Sodium (the most common and effective light available for flowering the marijuana plant).

      • MH: Metal Halide (often used for the vegetative state of marijuana growth).

      • Flouro: Flourescent (a less intense but cool light source that can be used for very small grows and especially for seedlings & cuttings).


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