Hey, sorry it took so long to reply I was out of town with family, its crazy I came back from a 4 day trip and luckily I just bought a timer for my lights, anywho going four days actually did them good. I never knew how good it would be for them to have a consistent light schedule, I mean we were changing the lights by hand but now that it goes off at the exact same second every day its like they're growing so fast.. idk anywho the nitrogen def. seems to be getting worse.. i know for sure that its nitrogen def. cause its yellowing more of the older leaves at the bottom of the plant and turning the edges purple. So i'll use the coffee asap. Im trying to wait as long as possible before switching the lights because we have a few small plants that are no where close to being ready for flowering they were late bloomers lol. Thanks for all of your help again, really we would have never made it this far without your help.