Anyone know what these leaf spots are?

[Thegrowgrow]

Have had these leaf spots for a week or two on three of my mother plants. Anyone know what they might be?

 

[Student Of Life]

Complete guess - Are you hand watering? If so, do you splash nutrient solution on these leaves from time to time on accident?

 

[Thegrowgrow]

All the spots are appearing 4 to 5 feet high on the plants so it shouldn't be burns. I also feed every watering in very low doses.

 

[heatherlonglee]

All the posted photos of leaves look wet? Can we see a few wider photos of the entire plant, and also other plants near affected ones?

 

[Thegrowgrow]

The first two are uninfected the last one is not

 

[Thegrowgrow]

I am thinking it might be Fungus Gnats. Any thoughts?