Part 27 The plants that looked healthy now look like there not after spraying and I didn't spray them for a week so they had alot of time to recover.

That stuff is toxic and that's why I wouldn't use it. It store inside the plant. That is how it kills the fungus gnades when they eat it. I don't use stuff like that because I also smoke the plant 😅 be careful with pesticides and better use

Gnats eat dead plant material. They love moisture. They overall do very minimal damage if any to live plants. If you have just a few about use yellow sticky traps etc. To keep numbers down. Now if you have a massive swarm then you need to treat. Spraying the plant with anything for gnats is not needed. The larva are in the wet soil. They don't lay eggs on the foliage itself. So spraying is just hurting, and stunning the plant, messing up the leaves. You have to break the reproduction cycle by keeping the larva in check and dead.

My observations over your problems with gnats throughout this strange way you are documenting the grow comes to the conclusion that when it's finished is never grow in that place again. Get all fresh stuff and grow somewhere else. Your battle with the gnats will never go away with that grow because of the rate they multiply.

Why are you surprised? It's toxic to plants too