S
SeaMaiden
That looks like scorching to me, either from heat caused by light or from 'too much' light itself. You say the leaves are getting in the way? Is it on any shaded leaves? Same height? Do you see any other pattern to it at all?
Examining what few leaves around that area that you're showing suggest that it's not happy with the pH range. I suggest shifting it down.
Right now I can't remember your media, if it's soil I personally prefer to go with a slightly lower pH range, 6.2-6.8 (the exception here for me are my outdoor ladies. They are grown in raised beds utilizing soil food web methods, and so are simply irrigated with unfiltered well water and fed teas and the like using clean, neutral pH water, either RO/DI or rain water).
If it's a soilless media the pH range needs to be lower.
Examining what few leaves around that area that you're showing suggest that it's not happy with the pH range. I suggest shifting it down.
Right now I can't remember your media, if it's soil I personally prefer to go with a slightly lower pH range, 6.2-6.8 (the exception here for me are my outdoor ladies. They are grown in raised beds utilizing soil food web methods, and so are simply irrigated with unfiltered well water and fed teas and the like using clean, neutral pH water, either RO/DI or rain water).
If it's a soilless media the pH range needs to be lower.