What do do you see here ?

I would say you have a very dry and or hot grow area and I would say you have sprayed spilt or watered over foliage, it's damaged anyway. Human error I think.

k-def, p-tox? too early to tell from leaf symptoms. You aren't spraying your plantn with some bro-science nonsense, eh? Is the first leaf pictured one of the first few sets? might explain the blemishes. those don't seem to be occurring on new growth of 2nd picture provided. I'd wager something is too high or being inhibited (mulder's chart can help). May need to let this prgress a bit further to avoid compounding the problem with a bad guess and wrong reaction. yeah, that first picture looks to have trichomes. trichomes on fan leavs may correlate to something good but in and of itseld doesn't really mean much.