Blue Dream, first time on DWC

Hello. Thank's for kind words in the comments. Unfortunately, I haven't been able to confirm the email yet (the letter doesn't arrive) and I haven't been able to thank you there. For a week, the plant grew a root. I thought the leaves looked light. It looks like deficite, nitrogen or iron. The total concentration of macronutrients and mikro elements is large enough for this age (1.3 EC). I won't raise it yet. Sorry for the language, English is not native