Hello, I'm nervous because my plants (in doors) have been growing healthy since mid April when I started with some Super Lemon Haze seeds from Green House Seeds, but in the last few days, one of the plants started changing the color of the leaves from the bottom to yellow. Some of the main leafs are drying too after a day or two, after being completely yellow. I am planing to change to a sodium bulb next week. I have read that it is normal when the plant is reaching its flowering stage, all though I still have the light 18hs a day. I also thought it could be lack of (N) but I have been feeding it more often and the problem does not ceases. The soil that I used was very rich. Any suggestions?

Thanks a lot!

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