After I removed the top plants I was not going to keep. The roots had trouble getting back to growing straight down in the solution as before. I had some temperature issues as well that prevented some growth in one tent. The plants weren’t too happy. I resorted to giving them a little spraying to get them back on track and keep them cool. I installed a new cooler running light (the bloomplus1500). I since fixed those and they bounced back really quick.
I have small yellow spots on leaves. I want to say it starts at tips and travels down. I moved light away and it seemingly gotten better. I moved tents for bigger space and it might have returned.
Your nutrients are to high. Cut them in half. Hydro gives the roots direct access to nutrients so at full dose the plant will start getting nutrient burn.
Also you don't want light to get into your buckets, Any light leaks will lead to root rot. Raise the pebbles above the holes.
check out this diary for how much nutrients should be used in veg.
growdiaries.com/diaries/86068-barney-039-s-farm-utopia-haze-grow-journal-by-chow-13/week/445013
Happy Growing