Leave Issue_Help Plz

Hello So my first thought was a magnesium deficiency, because of the striped look with green veins. However if you're spraying anything on your plants, or doing a foliar feeding the best plan is doing it as lights go out, because most things will react badly once they soak in hours of light. I used to mist my plants with water to boost the humidity in this young stage and because i didnt let the chlorine evaporate out over a few hours that too can burn your leaves. Like someone also mentioned though definitely be checking the ph as that can give a lot of these leaf symptoms too. And if by chance the leaves do continue to get that striped appearance, consider starting a calmag supplement every week. Happy growing, keep trying and also keep it simple. ✌️

That look like a ph fluctuation issue, make sure your ph pen is adjusted properly in order to keep your ph in check .