This is my first grow and I'm following the grow method in the book "Marijuana Buds for Less" by SeeMoreBuds. Indoor grow, watering as needed (3.5 qts when top 1/2-1 inch is dry - about every 2-4 days). Growing in Miracle Gro potting soil and perlite, adjusting water to ph 7.4 to balance the ph 5.1 of the soil. Temps kept between 70-80, with maybe 1 or 2 days hitting 90. Humidity avgs 60-70. CFL lights, 24/7. I got this deep chunk/strawberry cough as a clone and potted it 17 days ago. She was growing good for 2 weeks. Then the newer leaves at the top are droopy and curled compared to the older leaves, and the growth has practically stopped in the past 3-4 days. The color of the leaves look ok, so I can't determine if there's a nute deficiency - except for the main stem, which has some green and some purple/red. (In the 1st pic, the yellowing on the lower left leaf is from a fallen cfl clamp light that burned it) I've got an AK-47 that started at the same time, and she's doing great. Is there a problem or am I being overly worried? If anyone has any tips or suggestions, I'd be grateful!