I have about 70 plants, in those littlle square black pots you get flowers in from the store. Most of them are getting some yellow in the tips of there leafs and such, sometimes more than others, what is it, i think i havent waterd enough. And I have grown clones in the past, so i dont really have experience on how telling if they are males or females. Some i have started early then otheres, so some are 6 inches tall n others are about 3. some that are 6 inches tall i can smel them and they smell like a femal plant, or do they all just smell female at the start of there life?
Lack of Nitrogen.Even Potassium. Check your PH, your mainly looking for 6.5-6.7. When they do that in flowering its normal.That means that the buds are taking all the nutrients to grow.