yes 100% sure thats a thripe those little hydro crabs will kill your garden if not delt with use a pyrithium fogger from your hydro shop follow the directions on it and repeat EVERY 6 days untill you have bombed at least 3 times this will insure their larvae will die too then get neem oil or a prod. called bioneem if using soil and get your medium also thrips are the worst and tough lil fuckers too but i got rid of them with the above mentioned all the way but dont waist time they reproduse verry FAST