I just went over a friend of a friends house, and he told me I should get about 2 pounds. I know thats basically only possible outside, so I know im not going to get 2 pounds. But, I have 4 plants that are 59 inches tall right now, they are 2 weeks into flowering, im using everything from the foxfarm line, and a 400w HPS light...can someone give me a clue on what I might yeild?