what are these white spots on the upper leaves?(Skunk 1Fem Sensi Seed ,Plagron Alga Nutries)

I sprayed with an insecticide, I was already thrips infected in an older crop, I know what it is, but now there are 11 plants in a growing tent and one affected, if there was a thrips infection, almost every plant would be like the picture attached. I added an additive called Pragron Pure Zym to the irrigation water, this nutrient contains trace elements and vitamins. i don't know what it might be guys ..

Those are TRICOMES.. she beautiful and healthy. Great job 👏 👍

Yes, you've given us a lot of photos with a lot of trichomes... but the discoloration of the leaves in the last photo is what makes me lean towards thrips as your problem.

Don't worry it's just trichomes and on the contrary it's the element that makes your plant psychotropic But where do these compounds come from? Cannabinoids and terpenes are made in small resin glands present on the flowers and on the main leaves during the flowering of cannabis plants, called trichomes. Derived from the ancient Greek trikhōma, which means "hair growth", the trichomes are almost microscopic, mushroom-like protrusions on the surface of the buds, small leaves and, in fewer numbers, even on the stem. Although relatively complex, trichomes are mainly composed of a stem and a head. Cannabinoids like THC are formed inside the head

You haven't linked this with a diary so it's hard to judge whether this is a feed problem or not - but my IMMEDIATE reaction is that you've got a bug infestation - probably thrips... Beautiful or not, if you don't get these under control, you could lose your entire grow... They're hard to eradicate and with such a large grow right now, I'd recommend using spinosad ... Spinosad products can be used directly to kill thrips on contact, but can also be used when watering plants to systematically kill thrips via the roots. Once this grow is done, you want to COMPLETELY clean your tent and all equipment ... and be VERY alert for them in your next grow. Good luck!

and the 5th photo also shows a strange letter, what could be the reason for that?

the second and seventh pictures show the white discoloration, what causes this?

They are trichomes.