Can anyone please help me diagnose this plant problem, the plants are growing indoors in a proper tent, ie shop bought one specifically for the job. I have only about two weeks to go till cropping, these plants have been growing perfectly, till about 5 days ago. The leaves started turning upwards along the length of each finger of the leaves and turning a sort of darkish straw color. Each side of the each finger (if i can call them fingers) turned upwards and in to touch the center of the leaf strip, once the leaf fingers turned really dry, they then turned downwards from the end tip. This problem is slowly spreading to all other leaves, i desperately need to cure this problem before i loose all my plants Once the leaves turn fully fawn color, they drop off the plants all together, just like leaves do on treas at fall. The buds were just starting to swell beatifully, but now there growth has either slowed some or stopped swelling all together, i'm not sure which just now. I have taken some photos of the affected leaves, but i don't know how to get the photo's on to the computer, i am hoping to get some one to show me how to do it tomorrow, in which case i will post them at that time. Any help in the mean time would gratefully received, thanks in advance for any replies.