Throughout the first 7 weeks of veg, the 2x4 tent was kept closed with a 6 inch fan and exhaust/filter assembly running. After I flushed the plants to lower the PPM and raise the pH, the 3 gallon fabric pots were soaked. After a couple of days a white mold formed on the outside of the bags. I wiped off the mold, and kept the tent open, running a 30” tower fan from outside the tent. The bags dried quickly and the mold did not return. I close the tent up during the dark cycle.
Yesterday, I opened the tent up a saw a lone gnat flying around. I hung an adhesive bug strip. By the end of the day, it the gnat was stuck to the strip. Today, when opening the tent, there was another. I managed to squash and recover it. What is this thing and can I expect a larger population problem?
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I went out of town for 4 days, the tent stayed closed with two ceiling fans moving the leaves. Upon return, I checked the tack strips. The hanging strips were clean, but the strips lying on the soil has several very small immature gnats stuck to them. Over the past couple of weeks, I have only encountered 2 adults early on and exterminated both. It seems the nymphs emerge from the soil and go to the tack strips, interrupting the life/reproduction cycle. I put more tack strips on the soil to attract and capture whatever comes out..