Could be fungus gnats. Are they black with wings? If they are, yes the larva will feast on roots. The adult flies I belive are harmless besides laying hundreds of eggs.
I currently found a few in my soil and did 1 parts 3%hydrogen peroxide and 3 parts water. That should take care of the larva
This morning I fed my larger plants nutes (Big Bloom) but only 1/4 strength. I flushed 3x with distilled before feeding and the run off was 6.2 and 5.8 for the really bad plant.
I guess ill wait and see. Im about to start some clones soon so it wont be a total loss if things start getting bad...
For the smaller plants, im not sure its nute burn. When I started them out in solo cups, I flushed 3x with distilled and they have not gotten any nutes since. I did notice the smaller plants leaves started getting yellow is when I adjusted the ph of my distilled. Now I just leave it as is since...
Seems Im having some sort of deficiency??
2 plants sprouted about 3 days before the other. Seeds were planted at different times.
Soil- Fox Farms Ocean Forest
Water- Distilled when soil is dry. Distilled PH is 6.2
Nutes-FF Big Bloom added to the 2 larger plants about a week ago
Lighting-...