Leromeanswered grow question 2 hours ago Aphids.
Looks like its still an early stage of infestation so you can definitely save this grow.
You could simply spray them off the plants with soapy water if you want to stay away from poison. You can also add ladybugs larvae, those will help you to hunt them down. (they eat them)
But make sure to act quick, those things reproduce like crazy. Basically they are born pregnant with kids that are also pregnant already inside of them....crazy shit
Keep your tent clean also, clean the bottom and the walls.
Inspect the plants daily until you can be sure you defeated them. If possible quarantine infected plants.