By the look of the leaves, very possible there are thrips and spider mites... just had them in my grow... but I was in flower. Since your in veg, should be no problem to get rid of them.
There's a couple of ways (chemical and non-chem) too choose from. When I searched google, I found the best solution to my grow... it was a mixture of hydrogen peroxide, dawn dish soap and water...
Happy Growing😁