Nutrient burn or soil toxicity please help!!!

What's up guys, I have a problem with my plants and I can't tell if it is nutrient burn or some type of pH issue with my soil. So about a week and a half ago, I gave my plants a pretty large amount of bottled nutrients (I'm using Fox Farm Big Bloom and stupidly decided to feed it every other day instead of once a week) and within a single day I started to see the effects of nutrient burn on one of my plants. I have 5 clones and the one that got most affected turned into a crisp, almost all of its leaves are dead and I'm pretty sure it's not gonna make it through flowering. I have four other ones though: One Blueberry Kush plant that has gotten a pretty bad burn on most of its leaves, A Gorilla Glue that is now starting to get burned and then two Sour Diesel plants that are showing some other type of problem. I'm a first time grower so I wasn't really sure what to do about this. I flushed out their soil over the weekend however now the Gorilla Glue and two Sour Diesel which were the healthiest are getting what looks like nutrient burn and maybe some other problem. I'll post pictures below and it'd be great if someone could give me some advice on them. They are in the third week of flowering under a 300w LED light in my grow tent. I really want them to pull through but am starting to get worried.

Flush now

Transplant. Trim the damaged leaves.

Or light burn? You are frying her.

Could be light burn, that's a 20w light that I added because I couldn't get coverage on the top cola and it doesn't put out much heat. I definitely had a bad nutrient burn at first but after flushing the soil, the plants that were least affected started to get lighter leaves that began to die from what kind of looked like some sort of deficiency. Not sure if I changed the pH of the soil or started some other nutrient problem, but there's definitely something strange still going on here. I took hotrod's advice and am transplanting it's just a same to see these plants go to shit due to my inexperience.

I got absoultely no doubt it's from the led light burning the plants, is the temp below 25c - 77f ?, I'm very postive it's not nute burn by looking at it...it's light bleached.

How are you adjusting your pH, and to what are you adjusting it ? ..also you stems are extremely purple?

Damn yeah, light burn actually would make sense and can't it become worse with higher concentrations of nutrients? The temp is usually high 70s to 80 and I've been trying to keep it well ventilated. I'll shut off the smaller LED and try to find a better spot for the 300w, it's difficult to give it enough space in such a small area. Given the damage at three weeks into flowering do you think there's any chance they'll make it through given severely reduced yields?

I don't think that I'll be adjusting the pH because I'm not sure if that is the problem. I have a tester that should be arriving tonight though so I'll find out. Would the purple stems be caused by nutrient burn and pH or some other issue?

Calibrate new meter. Adjust pH to 6.5 in soil for best results
-good luck!

Hi
It looks like your unbalanced ph make your plant lock from absorbing some nutrients.
#People kill their plant with their love#
Good luck

I'll do that tonight, thanks Beachwalker!

Damn...double baked ganja. I gotta stay away from the plant infirmary before I have an anxiety attack.
JD

Nutrient lockout from bad ph

Most of you are wrong.
This is classic over fertilization. Those plants probably won't recover. If they did, you wouldn't want to consume them as they're full of chemicals now.

This is from over fertilization. .. so i think you are wrong lol

Cooked.
Fried, crispy chicken.
Sorry.

Flushing is all you can do i think........

Good luck.
Hope they make it.

BenGman, read the first post in this thread where the OP writes that they gave fertilizer every other day, stupidly they say, instead of just once a week. It's over fert. Even the OP attempts to say that. I'm not wrong.