Purple Leaf Tips and Tacos.. HELP!

[Morning Rice]

Hey guys, i have some raskals og kush that i popped from seed and it doesnt seem to be too happy, can anyone help me diagnose what is causing this issue?

The lower leaves are the first to be affected, the tips go from a deep purple to a yellow and crisp up and die. And others are rolling up inwards like a taco shell.

Any help would be appreciated... thanks

http://i251.invalid.com/albums/gg294/splatter12711/IMG_20101206_075030.jpghttp://i251.invalid.com/albums/gg294/splatter12711/IMG_20101206_075013.jpghttp://i251.invalid.com/albums/gg294/splatter12711/IMG_20101205_135837.jpg

 

[Morning Rice]

any idea what type of deficiency this is?? or is the taco leaves being caused by the light being too close?

 

[Seamaiden]

Add temps and relative humidity to that, I see them behave that way when VPD #s aren't what they like.

However, I see their stems are already reddish or purplish, adding that with the necrosis at the leaf tips brings me to think they're in need of phosphorous, or having problems taking it up/utilizing what's there.

 

[Morning Rice]

oh thank god finally some experienced growers have come to my aid.... i actually had posted a thread in the infirmary but got no response =(

here is the link