I've been using a 150 watt CFL at 24/0, in a heat lamp, on my new BG (Bubble Gum) plant, for about 4 days. And in those simple 4 days, my plant has undergone 5 inches of growth, and the serrated leaves are already nearly an inch wide, and are already almost an inch and a half long. They're even splitting off, this early.

...My older brother walked in and saw the sprout (yes, it's only been 4 days since this thing started growing, so it's a sprout) and said:

"Holy shit dude. I've NEVER seen a sprout look that mature, at only 4 fucking days of growth! It's tall as a motherfucker, and the leaves are already getting pretty big. Whatever you're doing dude, you're doing it right!"

Well the secret is, i'm sort of a 1st time grower. And am growing because i'm a certified card-holding MMJ patient. So obviously, simply a CFL will do the trick. But since mine is relatively strong (at 150 watts), and i'm using a heat lamp, i've got to keep the light further away from the plant so it doesn't burn up. So right now, it's about 11 inches away from the plant, and doing fine. Growing and everything (obviously).

I already need to add some sort of support to it, because it's growing so rapidly. I might need to break out the toothpicks and string, sooner or later. Then put more wind on it, so the stem will thicken up. =P