<span class="link_user">@PartTimeUnicorn</span>,
Love to hear that. Seeing those gnats in the tent is such a downer! The zevo that I put in the tent seems to have resolved the problem for me too. I haven't seen any new gnats in a few days.
I top dressed my soil two days ago because the plants were showing pre-flower. I didn't see any gnats crawling around in the soil when I pulled back to plastic cover sheet. Hopefully it holds up.
<span class="link_user">@PartTimeUnicorn</span>
Dude! Fucking YES!
I haven't put up my week 3 post yet, but I have started noticing them. I ran a power cord with a zevo bug catcher into the tent. It's quelled them but there's still a few stragglers. The bug catcher emits a blue light to attract the gnats. I use them in my house during the summer, especially near the sink and fruit bowl. They work well.
I had gnats in a lime tree pot a few years ago and used nematodes with good effect, but ended up changing the soil when I moved the plant outside the following spring. Otherwise I'm trying not to put more water in the basin than can be absorbed in a day or two. The fungal gnats drive me fucking crazy though!
The earth boxes are so damp that I think gnats are going to be a problem the whole time. I asked my GF for some of the milled mustard seed from build a soil for Xmas. Its supposed to kill of gnats and boost mycelial growth. Hopefully that helps. I'll let you know if it does.
Good luck hunting!