I had some problems with gnats. I left 2/3 days without watering for the soil to dry out, as gnats develop in humid environments.
I'll see the situation later.
For now the plants look healthy, but compared to other grows they seem less developed.
Any help will be welcome
UPDATE: I think gnats already gone
@Drgreen13, thanks man, I don't use any nutrients and I still don't know if I'll go all the way without using them. I only used soil mixed with worm humus and bottled water