White spots on first set of leaves - should i worry?

super tight node sapciing - reduce light. could also be causing the damage seen, but could also be some sort of nutrient issue. Fix the light first, then try to diagnose any symptom that continues after that. hopefully it allows you to be patient like that without rushing. if it is stunted due to light, it might take quite a few days to snap out of it - judge new growth spacing. resulting distance between growth nodes is your guide for light intensity. this is primarily light related, and there could be some coincidental nutrient imbalances, but that'll take more time to suss out.

looks like early signs of nutrient burn (overfeeding) rather than just stunted growth This usually happens when: • Nutrients are introduced too early or in too high a concentration. • The growing medium already contains nutrients and additional feeding causes excess. • The roots are still developing and are sensitive to strong inputs. What to do: • If you’ve started feeding, try cutting back or stop for a bit and just use plain pH-balanced water. • If you’re using pre-amended soil or coco with nutrients, no need to feed for the first 1-2 weeks. • Keep an eye on new growth, if it’s healthy, you’re good. Damaged leaves won’t recover but the plant can grow out of it.

This happens when you over water and when you ramp up the light intensity to quickly Your plant is going thru the stage where it needs hardening off to the bright light Make sure to keep humidity and temps in a good range

Looks like classic early overfeed growmie, 20ml/L at that stage is way too spicy for her, especially in that tiny pot. Seedlings don’t need much at all, their roots are still getting settled. That’s why the first leaves caught it, burnt tips, little spots, slowed down a bit, nothing crazy though. The new growth looks fine so she’s still pushing. I’d flush with plain water for a few days, transplant her soon, and keep feeds super light after that (1-2ml/L tops until she’s bigger). She’ll grow past this easy once the roots have room and you back off the nutes a bit. Happens to all of us early on, no stress. Better too little than too much when they’re small.