Can’t figure these out. They are almost turning white. Wilted and sad.

Growing in soil, nature’s care “organic”
Feeding complete crop control at 6-700ppm at 6.4ph. Run off is 800 but the ph is 6.5. What could be happening? 2 Mars hydro 300w about 4 feet from the plants. I just got out of a house with a water softener. I think it almost killed them with sodium. What do you guys think? I just have them a little 400ppm with 6.5 ph. Idek what to do. This has never happened

Well damnit

I don't know if this is your issue or not as I'm still relatively new to growing, but I noticed early on that my plants did almost that same thing (minus the purple tint). I thought it was a nute burn/lockout or a deficiency, turned out that it was just too humid, super high or low humidity ranges (added to high heat/ temperature also) gave me the same symptoms as nutrient lock out/burn/deficiancy. Apparently it's the equivalent of suffocating to a plant. But my fan leaves also showed a slight heat/wind burn look to them on the tips,, with some slight curling/browning.. it might sound stupid, but It's a possibility at least to check into if nothing else is working, I'd check into that and your PH levels. I know I had to research a lot just to find out that little but of actually important advice ( but it saved my plants at least!)

Hopefully it's something that simple, because my only other thoughts are some kind of disease/fungus/sickness... whether by bacteria or virus....or even critter bites, depending on your grow area.

Hope it helps give another possibility if your stumped at least. I know my babies almost died before I figured it out, even though some people say humidity doesn't matter, but I've found it does play a pretty big factor, everything has to he able to breathe, and it's something that could easily be overlooked diento a lack of good info on that topic

Also, I do know that frost or severe cold could turn a plant white and kill it overnight if your lamps failed by chance at some point or it became too cold outside. Just another possibility to look into my dude.

Hope you figure it out in time bud!

I had a similar situation. Many were dying before I even got the results I wanted. I spent a long time looking for the cause. I could not find a way out of the situation. But once on the Internet I read an article. It said that you need special equipment for the room, ventilation, light, fertilizer. I began to deal with this issue. Found everything you need on this resource. I started growing and so far everything seems to be fine.