Please, any HELP would be greatly appreciated!!

Hello to anybody reading this, I love the site, im on here all the time but even after research and trial, i'm unsure what my problem is here.

Im a first time grower, i have 3 strains here, afghani, bc big bud and bc hash. all my plants have yellow spots and them and the stems are purple. I got them this way, the spots cover almost the entire plant and the lower leaves look like there dying, strange though the plants seem healthy even with the discoloration. I assume this has to do with a nutrient difficiency but just not sure whether its first second or thrid teer, and which element it needs.

In an effort to get them green again I recently watered them and added some Miracle Grow 12 4 8 to it, and a the tiniest bit of schultz orchid food 19 31 17. I made sure to go well below the listed mix levels as I don't want to over fertilize the plant as this is a common tip. It has been three days and no change, instead of using chlorinated tap water I used fresh water from a spring fed pond near my house, I am going to by distilled water tomorrow. I know im doing something wrong here, just not what! Here is some pics of the girls and the setup, currently they are just under fluorescent lighting and I plan to put them outside.

THANK MUCH for any help!!

those look like they were clones that were cut at the wrong time. but it is possible to nurse them back to health, prolly gonna take a little while.

Flush, 1/2 strength feeding after flush, directly after, next watering 1/2 strength, you should see some improvement by then

and if possible get some quality food, shultz and MG suck.

Hey Thanks man, your exactly right, they are clones, I will definitely try the flush, hopefully that will work, just so I know I have the right idea, this is when you keep soaking the soil with distilled water until it runs through relatively clear right, can you use too much water and drown the plant? How long do you flush for? I also gotta couple other questions too if ya don't mind, um...by any chance can you recommend a good brand of food found in Ontario that i could use to help these girls. Can I clone these plants at a later date? Do you think the grow box is sufficient? Sorry for all the questions, sux bein new, but I wanna learn!
Really thanks for your help!

Yes you can clone them later. nurse them back to health and let them veg for a while. I just did an update in my journal if you need up close and personal pics during the cloning process. And the grow box should be fine but if your going to be cloning you want separate areas, again, check my journal, last page. Good luck

I did the flush and have been nursing them for the past couple weeks, they look great thanks for the tips will post pics soon!