Hey guys! Two big newbie questions here!

I would also avoid giving any nutrient until 14 days and I’m using coco . Your seedling looks very healthy no need for anything other than ph water . If using worm casting seaweed and molasses to feed the live bacteria in soil other than that sit back and enjoy your view much luck to you ✌️🏾

If it’s in super soil, just give water until 1 month at least or if it starts showing nut deficiency

Hello.. Hope you are well.. Do not feed her until 2-3rd wk.. Just ph'd water @6-6.5..personally i wud leave them until they are nearly root bound(7-14days)..transplant into final pot leave again for 3-5days then put ur led on.. Dont rush them.. They will show u wen ready.. Stay safe n gud luck with ur garden.. Any problems just ask the community or message.. 👍🍀

I agree with the last posted answer, I would avoid using any fertilizer until you have a decent root structure. Potting mix in general has more than enough nutrients to get your girl through the first month or so. Good luck on your grow!