You'll need to find a way to check water ph, and adjust it if necessary. "The claw" and the yellowing are a sign of ph being too low. Check online for you local 'Water Quality Report' and see what the average ph is for your local tapwater. This is at least a good starting point.

But most likely the buffers in your soil have been depleted. What is that...a 2 gallon pot? If so, I'd transplant to at least a 3 gallon pot, and prepare for switching to 12/12 soon. The fresh soil should provide enough buffering to take 'em to harvest. Do not let the roots dry-out when taking glamor shots of the rootball.

What kind lighting are you using? (CFL's, HPS, MH, fluoro tubes...?) When you do switch to flowering, the plant will stretch. Somewhere between twice it's height to 4 times it's height right now...depending on strain. The usable light from CFL's and fluoro tubes does not extend very far, but HID lights provide plenty of light.

Keeping a fan blowing directly on the plant(s) will strengthen the stems and prevent 'stale air' pockets.

You won't have to type as much if you'd continue at least one of the posts you've started regarding this grow, and were you to fill-out (copy-n-paste) the proper troubleshooting form (the link is in my signature) we could give you a better-informed answer to most of your questions and in a more timely manner.

Keep reading. Learning this stuff won't happen overnight. :thumbsup:
Rusty Trichome Reviewed by Rusty Trichome on . Is this n deficiency or just need feeding ?? NEED YOUR HELP PLZ!!! Hi , Could this be N deficiency? Or maybee just needs feeding ?, my plants are 3weeks old today from cutting's , I planted into plagron growmix with perlite which is meant to keep plants feed for 3 to 4 weeks ,. My plants have been drooping every day towards the end of the light session and then after 6 hours of night they are up and ready to go !!(i presume they are resting , as im a noob i dnt really know only from what i have read),. But today i put the light on and they Rating: 5