if I was to grow 3 autos. what size light would I need?

I have grown autos outdoors before with ok results. I am thinking growing indoors in a grow tent. I was thinking of trying 3 plants. not sure what strain yet. I was curious what size light would I need to get a decent yield?

How many threads on light selection are you going to start? Just curious

Your question is vague, are we talking cfl, t5, hid?

outdoors which auto grew best?

ammoniacal said:

outdoors which auto grew best?

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I grew 3 lowryder#2 from joint dr. I got just under an oz. off of each.