Get some BTI for those gnats (mosquito bits) I use a 5 gallon primo water jug and put about a cup of mosquito bite into some cheesecloth and tie it tight and drop it in, fill the jug and use that water to water the plants. Keep the bits in the jug and leave at least an inch to 2 of water in the jug when you’re using it and then refill it, I keep the same bits in there for about 6 months before I change it out
I use 3 of the jugs (15 gallons of water) I use one, then fill it then use the next jug, I use about a jug and a half at a time so it’s on a constant rotation where the jug sits about 2-3 days before it gets used again,
Did that the past 3 years and I’ve never had a problem again if you see a few gnats they’ll disappear in about a week and will never come back unless you add fresh medium, (I use the same pots and same living soil constantly re-amended soil as most of you know) but I haven’t ran in a tent for about 5 months now. Plenty of bud on hand and have the 5 that will go out in the garden this year but those bits work like a motherfucker