Nitrogen toxicity

It started with them looking a little too green. I thought I was doing a good job, then over night they turned on me... leaves curling, some burning and dark spots on some leaves. I’ve flushed twice not sure if that was the right thing to do. They both had ppm over 1000 and ph over 7 around 7.3. They haven’t had anything besides 280ppm 6.0 water in the last 3 days. They’re in soil and me being a dumbass didn’t account for the soil already having nutrients. I’m just wondering if my roots are done for and if my babies are going to die?

Been five days since I first flushed. I see some light green on the newer growth. The older leaves are still a bit toasted and I’m not sure if they’ll recover, but I’m hoping they do... Can I get some help? Should I transplant or something?

Your plant will be fine, just give the soil time to weaken before you resume bottle feeding. Toasted leaves aren't going to recover but your new growth looks good. Those leaves will be old news once you are well into flower so don't freak out. Make sure not to overwater, by this I mean let the soil dry before watering, each and every time.

Thank you