Yellow dots on leaves?

[LearningMore]

I have been noticing these yellow dots on the leaves of some of my plants. I do not see any bugs/larvae and the yellow traps aren’t catching anything. They aren’t in every plant in the tent. It’s weird how the dots just line up along the center vein on one plant, which made me think bug, but I can’t find pics that really match what I’m seeing. Any ideas??

17 day old ILGM Zkittlez autos in 5 gal HF soil.
HLG 600 at 30” and partially dimmed (lux 28000) 24/0
Infinity T6 plus oscillating fan; 4x4 tent
Temp 75-79; RH running a bit high around 70% (have dehumidifier running now; aiming for low 60s)
Gave CalMag 2ml/gal a week ago, but I’ve learned my lesson and put that away...Getting nutes at 1/4 recommended strength every third feed; Microbe Brew (and 1/2 rec dose Medina Ag molasses) about once a week. Watering (filtered tap; pH 6.4-6.6) about 1.5L every other day, monitoring pot weight.
The plants seem to be growing well, but I don’t want to miss something. I have similar plants in separate tents, too (all in same lung room), but still <20% of plants affected.

ETA: I compared pics from 2 days ago and there are more spots today than 2 days ago.

 

[LearningMore]

I don’t see any signs of bugs. Definitely more brown in color, up close.

 

[Bob's Auto's]

I think that's bugs your having...wait an half hour after lights out and then check with a flashlight.
Usually they come out when it's dark.

 

[LearningMore]

I think that's bugs your having...wait an half hour after lights out and then check with a flashlight.
Usually they come out when it's dark.

Will do, thanks

 

[LearningMore]

I think that's bugs your having...wait an half hour after lights out and then check with a flashlight.
Usually they come out when it's dark.

Ok, I put the light out for close to an hour. I inspected with reading glasses (I’m old!) and the 30x magnifier. I didn’t see anything on tops or bottoms of leaves. No debris or “bug poo”. I couldn’t see any movement on the soil surface. Nothing buzzing around. New yellow traps clean.

I was really leaning to bugs until I magnified and saw it looked more like brown/dried splotches. I’m very careful about watering and I blot off any water that gets on leaves, so I don’t think it’s spray. I’m wondering about a relatively-minor nute imbalance? I watered today with only filtered 6.5 tap water. I’ll keep an eye on it and post updates. The only relatively new thing is the addition of horticultural molasses about ten days ago, but I can’t find anything specific to this as a cause, and not every plant is affected.

 

[Bob's Auto's]

Then I'm sorry to have wasted your time. I've looked arround on the net, but couldn't find anything similar to your case.
Maybe someone else can help out? @pop22 @St. Tom @Proph @Mañ'O'Green sorry to bump you guys. But have any of you saw anything similar?

 

[LearningMore]

Then I'm sorry to have wasted your time. I've looked arround on the net, but couldn't find anything similar to your case.
Maybe someone else can help out? @pop22 @St. Tom @Proph @Mañ'O'Green sorry to bump you guys. But have any of you saw anything similar?

Nah, it wasn’t a waste of time. Good to know that is a good time to catch buggers, and now I have one less thing to be thinking about on THIS issue. I appreciate the suggestion.

 

[pop22]

Interesting. Notice how it follows the leaf stem. It almost looks like calcium lockout/deficit but I've never seen that appear in a uniform pattern like this. Can you get us a close up of the bottom of a couple of the affected leaves? I too think it looks like insect damage but it's hard to say with so few spots.

 

[Bob's Auto's]

but I've never seen that appear in a uniform pattern like this.

That's why I thought it was bugs. If you look at this magnification from the second picture you almost see shadows behind the round spheres. As if there's something inside...

Picture from @LearningMore

 

[LearningMore]

@AutoBobje @pop22 I’ll post more pics in an hour or so - thanks!