Larvae in run off and top of reservoir

So I’ve been dealing with what I initially thought was thrips in veg, treated with bonide once and my regular ipm with lost coast everything seemed to be healthy and happy, didnt see anything further. I am using humboldt tupar in plastic bags, with an ebb and flow system. I recently experimented going from 1 gal to 3 gal (which i think i may have overpacked the 3gal, leading to overwatering, than to pests is my theory) I also took the the risk of bringing clones in (I know, 99% likely to be my issue, but I wanted sour dubble and lemon heads lol) every clone i treated the same, bonide once than lost coast in veg. Its been a long while with success just staying simple, but ive had these tiny larvae now in all my reservoirs and i cant quite figure out whether its springtales or thripes or gnats. When I zoom in, they have like antennas, grey white ish appearance with a darker head. They sorta hop around a little, and flock hovering and bouncing on the water. Tried h202 which brought numbers down but didnt solve. I havent spotted a single bug on anything in a long time other than these. Occasionally a white fly but its rare and not as populated as these larvae seem to be, and they are populating fast. I have noticed one of the tables now has what appears to be white mites today moving somewhat medium speed when i lift up a pot after being watering/drained. Any leads as to what this is? How it may have come and how to eradicate it? Any info is much appreciated! I just treated azomax in the res today and flooded for a good while, going to dry back maybe 4-5 days than go ahead again

can you get some white paper and take a close up of one or three? it would help greatly, plus a bit about your grow and watering/feeding

Yes ill do that when lights come on, feeding is just a 3 part gh. Low ec 1-1.4 veg, 1.3-1.
I did use a bacteria nutrient recently before they appeared as a little boost. Not sure if thats related, also see these little guys that are white in the coco/peat mix moving pretty fast around the root zone, appear to have 6 legs and antennas. Roots are white and healthy ish for the most part

Springtails, a drop of wetting agent or dish soap breaks surface tension and they'll fall through the surface of the water.

They're harmless even beneficial, they eat dead and decaying matter, spores and other nasties while shitting out fertiliser.

Springtails springy thingy.

I don't mind them tbh.