Yes its APHIDS, as you are in flower,its not that easy to get rid......
solution 1 get ladybugs larvae... they eat them in a few days all
Or wash all leaves with neemoilsolution ( without touching the flowers)because neem has abad smell
neemoilsolution...1l water, 1 teaspoon of neemoil,,, and 1 drip dishwashingsoap
Its alittle tricky... but you can use a"dry cleaning too.... use asmall brush( for painting pictures) and brush them away... good thing is you are close to harvest, and they can do big damage
.. I would prefer a drycleaning with a brush or something like that
and after your grow, look where the have come from.-.. and clean up your growing utilities with oeroxyd ( tent , etc,,, wash the smartpots,,
i wont spry anything on them because , you want to smoke that