I agree it’s hard to tell with the lights. But the roots look to b nice and white and the leaves I see a little tip burn and some spots. How are you checking the ph with a pen or drops. I’m a rdwc grower and I find it Necessary to calibrate the pH pen very frequently fluctuation of .5 to 1 over a two month grow can really throw off things. That was one of my biggest issues starting off
Also could I suggest putting the air lines through the top or the net pot. I made The Mistake of putting my airlines through the side then the roots tangled themselves in your stones and airlines every time you left the net pot you rip the roots so when you put a line through the top they still tangled but at least you left the air stones with the route mass also makes it easier to clean the reservoir being able to fully remove the whole top of the bucket
So i do general hydroponic flora treo. I currently am growing a less is more using only armor si cal-mag and the micro grow and bloom. And I’m also growing the expert line with like 12 additives. Now in ppm it differs per stage of growth. Truly I don’t check my parts I’ve ran the same schedules for years. I start with ro water then si then mag then micro grow and bloom
I ran GH trio on my last run and they worked great. I never ran at full strength. A PPM meter is handy to keep track of how strong your mix ends up. If you are giving it a full line of nutes + cal mag, and all the supplements, my guess is that your PPMs are super high. I would mix a 13 of Gro:Micro:Bloom with a touch of calmag, to 750-1000ppm to see if the plant recovers, then slowly resume the supplements, but carefully monitor the PPMs making sure you don't cross 2000 ppm, after the plant is back to 100% healthy.
I ran as high as 2200 ppm on my last run with no ill effects, but this time im trying to keep it under 1500 once I add my bloom bosters. I know there are a million and one supplements out there, but its crazy what these plants can do with just base nutes.