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Hast wahrscheinlich beim gießen ausversehen wasser draufgespritzt, ist nicht schlimm aber einfach drauf achten, die kleinen blätter verkümmern eh später.

The blotchiness onthat first single-blade leaf is no problem. It is not uncommon to have some ugle first 1-2 sets of leaves. Your plant looks pale and may need a bit more fertilizer. Also, possible the grow light is so bright it only looks to be pale but is actually lush, so double check color under less intense light or normal room lighting if possible.

That's pests, and they are very very small,mix Neem oil and soap water and spray t on