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How Many Cannabis Plants Per Light

How Many Cannabis Plants Per Light Many legal indoor medical marijuana / cannabis growers want to know how many cannabis plants per light, and the answer is always that it depends. There are many types of lights for growing marijuana, with all sorts of different wattage. One formula to consider when determining light amount for your cannabis plants is 50W of lighting per.sq.ft. It's generally assumed that you should give each cannabis plant 2-4 square ft of space, which means at a minimum one plant would need 100-200 watts for one plant. 

Here is a cannabis plant spacing, profit, expenses, revenue calculator to help you determine spacing.

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