I've been using a 6-8 week flowering cycle, and have just stepped up to a 400 HPS, and 4, 2x40w Fluorescents, with grow light tubes, about 3 months ago, but I have wispy, airy buds.
I use Miracle Grow garden soil, and for Vegetative Growth, I've been using Miracle Grow plant food (24-8-16) when...