Channel+ (Medical Seeds) First grow ever

Hi @Sundancer! Your pH is fine, your last feedings look great. From what I see on your pictures it seems that only the leaves that are close to the light are affected, so I'm thinking about a light-burn. I would try to increase the light<--->plant distance; remove the most affected leaves (they won't recover), and see how it goes after a few days. Hope this helps, keep us up-to-date and happy growing 👊

I think you are still a couple of weeks away from harvest. I'd wait for more hairs to darken and curl in. Also if you can check the trichomes that is the best measure. Look for milky white and amber. Good luck!