yellow leaves

[cheryl1]

This is my first grow and my plants are in flower mode. My plants are dark green except for the top leaves directly under the lights. There is a perfect line down the middle of my plants where the lights are that the top leaves are yellow and the new leaves are yellow. There is no signs of burning on the edges or curled leaves. I have a fan the oscillates on them.

cheryl1 Reviewed by cheryl1 on 08-27-2009. yellow leaves This is my first grow and my plants are in flower mode. My plants are dark green except for the top leaves directly under the lights. There is a perfect line down the middle of my plants where the lights are that the top leaves are yellow and the new leaves are yellow. There is no signs of burning on the edges or curled leaves. I have a fan the oscillates on them. Rating: 5

[headshake]

fill out the http://boards.cannabis.com/plant-pro...ing-forms.html and post pics if you've got em.

-shake

[polishpollack]

This sounds like a micro nute difficiency, like sulphur. Other micros nutes might create this appearance, but I'm pretty sure if sulphur is missing, you get a top that is very yellow. You might be able to find a sulphur fert additive you can give, but just go easy with it. In the future use a more complete fert, one that has sulphur, boron, maganese, etc. The Dynagrow brand is a good one to use, works in both hydro and soil. There are others too, just read the labels. The powder ferts like foxfarm's and dr. earth are probably about as complete as you need. You can take a look at those too. One cup of these ferts for every 3 gallons of soil should do it.