Help my Girls are starting to turn yellow

[JELLYFISH82]

Hi Peeps

Please take a look at my pic and tell me what you think ?

i've got them under a 300w cfl
in soil.
i'm not feeding them much so i dont think its over feed

Could this be pot bound ? i dont no thats why i'm asking you guys

Any help would be great

thanks

 

[Buddreams]

LOL? No pics of the whole plant?

 

[hardroc]

it needs nutes, looks like a N deff but that usually starts at the tips and works it's way down the leaf I belive
is that leaf from the top of the plant, if so that's normal when they're still veggin' when it's new growth

 

[sickstoner]

this helps alot!
http://www.weedfarmer.com/cannabis/tables_guide.php

 

[JELLYFISH82]

LOL? No pics of the whole plant?

no sorry - it's only the new leaves that are doing this - you can only really see the problem up close.

but here a pic any way

 

[apla0]

Well it seems ok to me.. no need to worry.. you could try boosting N a bit , but keep in mind that it's very easy to nut burn your plant..

 

[dnkfrmthasoilz7]

looks like under nutes or maby you need more co2??? also it could be that your lights are to far away

 

[JELLYFISH82]

here's some more pictures - i think it could be a PH issuse as i was told they were planted in coco soil so i was using 5.8 for the water.

but now i know they are in normal soil so i have changed it to 6.8ph

thats was a few days ago but i think there getting worse

 

[JELLYFISH82]

any ideas?