Lighting Help with Deficiency please

[Croakersoaker]

my plant has started showing yellow from the top new growth. from all the pics i have seen i think it is an iron deficiency but im not sure it is a small northern lights auto under 180 watt mars led, can anyone help me confirm. also is this something calmag plus will take care of and how long does it take to work

 

[ThaGreenBandit]

CalMag Plus is gonna address Calcium and Magnesium issues. This does look like an iron deficiency, or maybe even Zinc. Check this out so you can take a closer look and make sure

http://www.growweedeasy.com/marijuana-symptoms

A foliar spray made of some chelated iron would help, if it is indeed an iron deficiency

 

[thecuch]

I found that a bottle of cal/mag and micro help in a lot of deficiency situations. If im not mistaken....micro will take care of iron and zinc.

 

[Croakersoaker]

can you foliar spray while flowering

 

[illbethere]

yes, if you are cautious on not getting the flowers wet but I wouldn't recommend that.
Also, I can tell you you are not yet flowering if that's why you're asking.

 

[Croakersoaker]

I only took a pic of one plant but it's actually on three plants and all started within three days. I haven't done anything different except that last week I started using the 300w (180 draw) mars hydro led. Before that I had been using a knockoff ds100 . Does anybody think this could be belching from the led?

 

[Croakersoaker]

And all three plants are flowering this one just barely started but the other two are a couple weeks in

 

[ThaGreenBandit]

LEDs will contribute to CalMag issues, but I don't think that what your 0lants are experiencing is caused by the light itself, or the belching (bleaching?) you mentioned. Definitely looks like a deficiency

 

[A4]

my plant has started showing yellow from the top new growth. from all the pics i have seen i think it is an iron deficiency but im not sure it is a small northern lights auto under 180 watt mars led, can anyone help me confirm. also is this something calmag plus will take care of and how long does it take to work

CalMag Plus is gonna address Calcium and Magnesium issues. This does look like an iron deficiency, or maybe even Zinc. Check this out so you can take a closer look and make sure

http://www.growweedeasy.com/marijuana-symptoms

A foliar spray made of some chelated iron would help, if it is indeed an iron deficiency

Nice eye! That is exactly what I was going to say, more zinc than iron in my opinion though. Those zebra striped leaves are a dead giveaway.

Fertilome makes one that contains both Iron and Zinc and is dirt cheap and works good. I have used it before.

http://www.fertilome.com/product.aspx?pid=f56b2cf2-3435-4e47-aae0-53fbbab23ea0

 

[ThaGreenBandit]

I guess I'm managing to retain some of that knowledge you constantly bless me with, Guru!