Fungus Gnats in DWC?

Togs

Active Member
Have had a few grows over the last last few years and never had any pest problems.
Last few days seeing a few gnat like bugs in the 3x3. Put the yellow traps out and got one.
Is this fungus gnats we’re dealing with?
Was wondering if these plastic covers I’m using over the hydroton ( first time using these ) could be keeping it moist up high making a good environment for them.
Was making an attempt to keep light out of the root zone.
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