Zero flowering

Zero Flowering
Hey all...I have posted here a week ago asking about my Hindu Kush plant. It wasn't flowering and I am still not seeing any movement in that direction.

The facts:
22-24" tall.
Veg'd for 5-6 weeks
It's now been in the 12/12 stage for 16 days. Zero flowering as of now.
There are NO alternating nodes off the stem.
I am using a light with a color spectrum at 6500K. A new 2700K bulb is en route now.
There are NO light leaks at night.
I am using a pro-flowering nute.
All the leaves are healthy and the stem continues to branch out.
Now, for the last 4 days I have seen in multiple places, two little nodes/knots just outside the stipules. Sorta like on this picture (not my plant).

http://marijuana-seeds-weed.com/wp-c...r-close-up.jpg

Is this the beginning of flowering? If so, why is it going SO SLOW?

What can I do to speed this up? Shut the lights off for 24 hours? I have read that supercropping might help too.

I'll take any tips anyone can provide to kick start this puppy.

they may take time to make the change. should be any day. Also if your light isnt strong enough that might slow things down.