Не понЯтно что происходит подскажите

They grew slowly and reluctantly under the Mars Hydro 2000, I switched to a 600-watt HPS, and things started to go well. I made a nutrient mix on the 2nd week with GHE bloom, micro, and gro at 0.5, and it was encouraging. I'm growing hydroponically, and by the end of the third week, beginning of the fourth, I made a mix at 0.8 per liter, and in 2-3 days they looked like this. I made a mix at 0.5, and they just stood still for 4-5 days without any changes, I just watered them, and they aren't even growing. Can you tell me if they will grow or if it's pointless to try to save them, or will they turn out to be dwarfs since there was stress? It's been about 10 days with no changes, new leaves aren't growing, they're small and light green. Why did this happen? Where did I overlook any mistakes? Also, when I switched to 0.8, everything was fine for 3 days, but when I added diamond nectar, problems started. Maybe the lamp isn't suitable with the wrong spectrum? Photos of the lamp are attached. Please help identify the cause; the temperature in the box is 25-31 degrees Celsius.