[Resolved] Fungus gnats

Hi, I’ve been using an autopot for a while but I’ve encountered a fungus gnat problem. The eggs keep accumulating by the valves. I vacuum them out but they keep coming back. The top of the pots are bone dry so not really sure how they’re able to hatch and breed so quickly when I’m vaccing them every day. Anyway, what products would you recommend to use in the reservoir which won’t harm the plants which are also flowering. I also have sticky traps all over the place and multiple fans to maximise air movement. Thanks in advance