Got a photo? Might help identify the problem
Im gonna say thrips
I had the same thing, sprayed neem 2 times and kinda knocked them out. I am gonna spray this grow before I see them, prevention.
if you shake your plant, and you have thrips, you will be able to see adult thrips fly off your plant. thrips prefer to fly in an attempt to escape. spider mights and aphids wont fly. the white things are probably juvinile thrips. the black dots are thrip poo. thrips breed in soil, so make sure you get rid of any old dirt or pots that may be laying around. try to keep your room clean, pest breed in dirt and dead plant matter that may be laying around.
I got rid of thrips by treating my soil with beneficial nematodes. it was cheap and easy.
spray SPINOSAD, it is SAFE, it a bacteria that kills thrips. One application does it, two to be safe. Works great, safe for you, safe for your plants.