Looks like you have Thrips. It's often mistaken as a deficiency in nutrients. 100% all natural, all-in-one Eliminator insecticide and fungicide will get rid of it fast without harmful chemicals, killer pesticides, residue soap, or oils that clog plant stomata, etc. You can grab a sample at doctorzymes . com/wizard.
What you do is use 4oz per gallon and spray 3-5 days in a row. Check population after the 3rd day and spray as needed. Also do a soil drench with 1 cup per 5 gallons to kill the eggs and larvae in the soil. The natural qualities kill the bad stuff while working with beneficial nematodes, microbes, and good bacteria in soil. Once you get rid of it, go down to 2oz per gallon for weekly preventative maintenance. Do that, you'll be problem free for good from seed all the way to last day of harvest without effect to terpene profile. I hope that helps.
Happy growing,
Doctor Zymes