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how many led watts per autoflower

LED lights wattage per plant?

tinwagon
New Member

Im growing 3 auto-flowering seeds for my first grow and am thinking of going with an LED light setup. I have seen online that 3 plants would only need 100W but have also seen videos of a 4 plant setup with 2 X 300W LED panels while also being grown outside.

Would anyone be able to help me out with telling me how much wattage would be ideal for 3 plants, indoors?

sallygram
Well-Known Member
Trich_holmes
Well-Known Member

Im growing 3 auto-flowering seeds for my first grow and am thinking of going with an LED light setup. I have seen online that 3 plants would only need 100W but have also seen videos of a 4 plant setup with 2 X 300W LED panels while also being grown outside.

Would anyone be able to help me out with telling me how much wattage would be ideal for 3 plants, indoors?

GroErr
Well-Known Member

Look at it as watts per square foot, plant sizes will vary with strain and how long you veg. w/sq./ft. is a better guide for your space.

If you use those mars or mars-like blurple panels, go 40-50w/sq. ft. (actual output, not by the name – e.g. a “300w” is actually around 180w) in flowering or you’ll get fluff and little weight. Quality is decent they just don’t pull the weight you can with other techs. I’ve used some for almost 4 years but for the last 3.5 years I use them just for veg. They’re quite good for veg.

If you go with COBs you can go 30w/sq. ft. and get both quality and weight, takes a little more investment but less wattage, more weight and better quality.

Here’s 3×8′ with 600w of 3590 COBs or 25w/sq./ft., don’t expect donkey dick colas with blurple LED’s though.

Hi there 🙂 Im growing 3 auto-flowering seeds for my first grow and am thinking of going with an LED light setup. I have seen online that 3 plants would…