Whitish-yellow color on leaves

My plant is 27 days old and is growing in an aeroponics system, I'm using 1 1000w mh bulb and the temps staw from 74-80 degrees.(humidity 45-60)...I'm using 3mg of standard aerogarden nutrients + 1.5 ml of grow more MAXI-CAL (10-0-0), pH 5.5... Can someone tell me what is wrong with the plant?

Top leaves curling down, bottom leaves curling up

Yellowing of the leaf tips and edges is usually a sign of N deficiency....just my opinion.

I think the dead patches are old injuries. Not a deficiency.

I don't see an N deficiency there ... but the leaf curl is indicating something a bit out of whack ... could be heat or root aeration. cn

cannabineer said:

I think the dead patches are old injuries. Not a deficiency.

I don't see an N deficiency there ... but the leaf curl is indicating something a bit out of whack ... could be heat or root aeration. cn

Click to expand...

nah man, the white patches just showed up and started to spread around the leaf. any other ideas?

Look at your pic #2. Notice how sharply-defined the patches are, and notice that they're not more distributed to the other leaves? That's what has me thinking injury, probably from a brief overheat from a light. I could be wrong, of course, but that pattern says "not a nutrient issue" to me. cn

My plants started out with the little white dots on the leaves kind of like dead but not, then the leaves started curling in, then they started looking like they were dying on the outer edges of the leaves, and last they started losing color, and finally I see a little web hiding in the area where the buds were... have you figured out what the problem is yet?...If not check out these three sites there are pics to show kind of what it looks like on the plants themselves...Its the only suggestion I have , hope its not they are hard lil bugs to get rid of....good luck...

http://www.cbmercantile.com/guides/identify_spider_mites.asp
http://www.420magazine.com/forums/how-grow-marijuana/71978-what-does-spidermite-web-look-like.html
http://growersbook.com/marijuana-encyclopedia/pests-and-diseases/spider-mites-killing-and-controlling-spider-mites-on-marijuana-plants.html