up the amount of 'grow' fertNow how does one go about adding "a little extra nitrogen"?
(sorry for the long response was away for the weekend)What kind of light you use? And how far from the top of the plant is it?
(sorry for the long response was away for the weekend)Could be signs of rootbound plants, transplant them.
(sorry for the long response was away for the weekend)what type of soil are you using? i use ffof and dont have to really use anything for at least a month and have no problems with yellow leaves till they go to 12/12. those pots are kinda small id put them into a 5 gallon container you will get more buds then the amount of money and extra soil think about it do the math. plus once you buy the 5gallon pots you can always reuse them.
(sorry for the long response was away for the weekend)up the amount of 'grow' fert