Quote Originally Posted by dejayou30
Looks like a Molybdenum deficiency from the reddish leaves. I don't grow in soil, but check this out for more info. I have it bookmarked:

Revised: The Complete Guide To Sick Plants,pH and Pest Troubles - PlanetGanja.com
props
this link should replace the other stickys in this forum it is by for the most detailed for plant problems i am book marking it as well
twitch Reviewed by twitch on . Leaf Turning Yellowish/Burgandy are you using soil or hydro?soil what ph is your soil or hydro setup?6.4 if your using soil what mixture or brand is it? my own mix what water temps if you are growing hydro? what are your ppms or EC?1100 what nutes are you using how much and how often? Technaflora's BC Boost, BC Bloom, Thrive Alive B1 Red, Sugar Daddy, and Magical what part of the plant is affected? Fans what size pots are these plants in and how big are they if growing in soil? 3 gallon and about 1' seeds or clones? Rating: 5