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Ask Jack: How Much Grow Light Wattage Do I Need?

August 26, 2016

Question: Often times I am asked the same basic question. How many grow lights do I need? How much grow light wattage do I need? Does my cultivation facility have sufficient grow lights?


Answer: First, every marijuana cultivation facility is different. Additionally, every strain is different and may require different growing conditions. With that being said, there is one simple rule of thumb anyone can use to calculate how much grow light wattage they need.


1,000 Watts * (Square Footage of Cultivation Facility) / 25 )


So for example if your grow facility is 2,500 square feet, divide this by 25 and then multiply that by 1,000 watts. 


2,500 Square Feet Facility / 25 = 100

100 * 1,000 Watts = 100,000 watts of grow lighting should be sufficient.

Photo By Plantlady223 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=46098927


Happy growing!



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