4 weeks into flowering on the two susceptible plants and I always have yellowing leaves starting at the bottom. I am feeding them pretty well but the one strain does it regardless of how much N I pump into it. I'm waiting for a TDS meter to see just what I am getting out of the bottom of the bucket, but I typically give them a Tablespoon of 20-20-20 weekly and everyone is happy...except those two from the same strain. I am getting some leaf clawing, a sign of too much nitrogen, but I think it is more of a light reaching issue since the plants are taller than the light exposure and only the leaves that are above the level of the light are clawing.
After 30+ years with this strain doing the same thing every grow, I finally just learned to ignore it. The plant is very lanky and not a great producer, but it is ancient and I enjoy growing some of the non available old strains from yesteryear. The new strains are much like new cars compared to the old ones...the old ones had problems that you just learned to accept...new models have most of the bugs worked out and improved...but I still love the classics!
