I can't give you advice..
But I know if it were me, I would do a water with hydrogen peroxide and water mix.. maybe 5 to 1..
It will kill fungus gnat larva (and others) on contact.. ..
.
No it fucking doesn't.
I'm going to say fungus knats but your going to have to do better than "little white bumps" Are there tiny tiny bugs flying around? like hanging around the top of the pot and then when you disturb the dirt they fly all around? Those are fungus knats.
Best way to get rid of them in soil for good is to follow ALL three of these steps.
1. Put an inch of sand on top of your dirt.
2. Hang a bunch of yellow sticky traps around the grow room
3. Dunk the whole pot and plant in azimax.
Hydroperoxide doesn't kill insects on contact. yeah, I read that stupid website that said that was the way to get rid of them but I kept searching and found out that was bunk.
I got them from a friends clone. I'm using hydroton. I went the sticky trap and hypoasis mite route, mostly cause I don't use pesticides and I dig biological control. I also like the idea of little bugs in my soil eating fungus knat larvae in a big gory display of dominance. Some times I turn off the fans and try to hear them screaming.