It’s normal for a plant to get rid of some lower leaves that are not getting enough light they’ll suck the nutrients and let em die which is what I think is happening here. Up top I’m seeing some curling of the leaf tips this happens for different reasons to much food… over or under watering… wind burn… or root problems… it’s just started so nothing to be concerned about but watch these things and if it gets worse you’ll need to adjust something
If it’s high you can use a soil acidifier like this or some garden lime if low…but if it just a tiny bit off you can just water with low ph like 6.0 same if it’s low water high 7.0 until you get it back in range
If all u got is a couple of fd up leaves, on a plant already several weeks into flower, I’d say u ain’t got nothing to worry about. That’s the natural progression, the leaves that showed up first, leave first. Maybe take a couple puffs, do nothing, n see what she has to say next. See what happens next, when r if anything happens at all. @MeEasy makes some valid points, n I agree with him.
Predator mites are a good option if you have an infestation. Do a search for “The Bug Lady” Susanne Wainright Evens. she is the bug scientist we all use.
All my products are available on various websites, they are not hard to find since i have the same screen name and pfp. Hopefully they will be on Amazon soon so I can post links.
@Dman1969 i was actually looking at the apera top one. Its comes with a case an all the solutions needed for cal. And for storage…how do you like it so far? What do you use to test the ph in ur soil if you dont mind me asking. @latewood thank you im going to check her out.