That first pic is right on, but mine was just one blade.

My room was 2x4 and I covered it with visqueen(sp?), it's black on one side, white on the other and light proof. I piucked it up from my grow shop at a $1 a foot 10 feet wide. It works great.
Chronic Chrissy Reviewed by Chronic Chrissy on . Twisted baldes? OK the plant in question is a 3 day old Northern. I grow in sunshine mix 4(soil w/ perlite) and use chemicle nutes, the pH is at about 6.5. I use a 400w MH bulb. The temp is a steady 79-80, and humidity is 28-35%. Today I flushed, transplanted then fed with 1/2 concentrated 10-10-10. Then a few hours later once they had a chance to absorbe the water I LST'ed a little to expose some branchs. Now it is only one blade on one leaf that is twisting. I don't know what it could be from...blushing...it Rating: 5