I keep my ph between 5.5-6.2 for hydro Dai.

PS.....jash keep doing what you are doing. Do they look the same, better, or worse today?

Usually in nuteburn your plants grow SUPER well which may explain the large amount of roots.....and then somewhere you cross the line and add too much and so POOF.

Do the roots look healthy and what are the rest of your specs?