There is no question about it! 6 is the answer. 6 plants per light at harvest x 3 lights = 18 plants total. 3 oz per plant = 54 oz. Guess you could harvest twice in 6mos so your looking at 108 oz.

108 oz / 16 = 6.75. Now subtract .75 for who knows what reason and there you have it. 6:thumbsup: