Stunted growth, leaves look like they are dying

I started my plant from seed around January 5th, and it has been going good. After about faburary I started with with fox farm nutrient trio and I gave it tablespoons instead of teaspoons for like two waterings. After I noticed after I saw my plants curling down with dark green leaves. I flushed it out and it seems like it has just gotten worse with with leaves dying and falling off. The growth has been stunted for about 2 weeks now and I layed way back on nutes. I'm just not sure what else to do. Any help? I'm also using 4 40watt led grow lights. And I have been ph my water to 6.5

no problem maybe a couple few weeks to recover, dump the dumb FF soil, transplant into promix, add a small amount of
organicare, or fish powder/concentrate, follow directions, water when pot is light only. be good till you flower likely, if it needs more food in veg add more organic nutrients, then more in flower too.

I'm also using coco coir I forgot to mention. But will definelty look into grabbing some promos asap! I'm just a tad scared to give it more nutes. Just I do like 1/4 strength if it needs more?

sorry, I failed growing in coco, so.....
good luck

In other words I should switch over to promix?

Whatever you do don't give this plant any more nutritients any time soon!

Coco is normally greatly depleted of salts so whenever you think it's time for a transplantation use it.

BTW if you have an EC meter at hand it would be nice to know how much EC is in the drain of this pot? If the salt buildup is too high it can kill your plant. Did you notice that the pot looses water to a lesser degree as of late?

what I decided was to take as many clones as possible of the most healthy parts. From there I will try to revive this girl and throw her into flowering first sign of recovery. I feel the clones will give me a better chance at a second chance if all else fails. Do you think this was the best decision?

If you take clones from a plant in trouble the clones themselves will be in an equal position of stress and will root only slowly. If your mother plant got stunted due to a N tox then most clones won 't make it.

I took 8 clones of the healthiest looking leaves. I took 3 about 5 days ago, and 5 from yesterday. They all look to be holding up fairly well. Dipped in clonex with only distilled water in a aeroponics misting the roots. So far so good. But you think I will have difficulties with the preservation of life do to the N tox? My mother plant is looking pretty bare but still slugging for some life. Any advice on my current decision to try and keep these young ladies going? If it's a waiting game, I'm willing to wait. I would just hate to see so time and effort a waste.

Well if they really are stunted (looking at your last pic I think they am - the fan leaves are so much more developed than the initial side branching stem) then it may take longer or you'll loose some of them. But that's not really a major problem because you seem to take these clones in order to preserve your stock, for that it'll do. You can then later decide if you'll have to do another cloneing-run again or throw some of the weaker candidates away etc. You can successfully clone even in midflower, but it's a PITA and a vigorously vegging plant is much more optimal.

Your cuttlings as seen in the last pic seem to do well. Just give them time and don't stress them. They need soft light 24h each day.

But the priority should be to get your main plant back on track.