Spots on leaves

I started seeing the same starting on my plants growing in Foxfarm Cultivation Nation and my local shop recommended Green Planet Pro Mag. It's a cal-mag supplement with 2% added nitrogen. They said to mix it half strength in a spray bottle and mist the plants when the lights are off to quickly fix it. Between that and adding it in the water the problem was gone in under 48 hours.

It is potassium deficiency spots. The burnt straight tips is what gives it away. After that it spots leaves. I would check your substrate ph first to ensure it is not a ph lock out. If that is in range I would provide more potassium she is hungry. 🌱

look like you need calmag and u have light stress moves your light more up 😎

Actually a cal & mag. As I see fade inbtween vains also. If you've epsom salt on hand, works great in soil. But, in gen just buy a calmag be mindful of what you buy, as lot now a days are +s and have N and that in them. Myself, I use Cal powder and Epsom salts.

She needs cal pal