Turn off your blurple for pics so we can see it.
Do you ever see what appears to be like dried spit or tiny snail trails on any of the leaves?Stalks are fine and it is mostly affecting the lower leaves. The lower ones are yellowing and getting those little spots. The one in the photo is from the middle.
No snail markings or anything like that. I’ve done the same basic routine for both plants and the one with the spots is the problem child. I’m just stumped on what to add/decrease to help it out. It’s week 4 in flowering stage too.
What are you feeding it? Whats the room temps & RH? Are you using bloom boosters or anything like that already? A lot of times a plant will "gas out" like that and go yellow from use of high P-K boosters too early in the flower cycle. I notice the tips are burnt so its experiencing nutrients. Lots of purple in them stems and leaves too.