Marihuana plants leaves turning yellow? PLEASE HELP!

[Tanookibomb]

Hi, I've noticed over the past few days the leaves on some plants are turning very pale green,
I've placed some pics in my profile, I'm not a technical person and I don't know feeds and all that stuff,
Let's say they r set up, this guy said the feed was in the soil, as these little white ball nugget things, not sure if that's true so I've been giving them some normal plant food from the store?

 

[Lady Cannafan]

to Tanookibomb!
There are a few more things that members would need to know in order to assist you, kind of food...watering method...etc. here's a link that should help:
How to Ask for Grow Support

It would be great if you could post the pictures on the thread so members can get a quick look without searching for them.
Just click on the little camera icon on your post options bar above and choose the pictures from your gallery.
If you need more help with that, here's the photos how to link:
Photo Gallery Guide - How to Resize, Upload & Post Photos

Here is an excellent plant problem pictorial that might help you in the meantime too:
Cannabis Plant and Pest Problem Solver - Pictorial

Again, welcome!