I had to translate your words. Make sure your pH is around 6.2 and you are keeping that consistent. They don't look too bad actually. The leaves are frosted with resin, but I'm more interested in the fading to yellow that i see. I can't decide if that's a shot you took at lights on, or if it's a sulphur issue. That's why i mentioned the pH. Make sure your micro nutrient you are using is a quality one. Your plants don't even have burnt tips. I think you could up your ppm a little more.