If this is 5 weeks old there is something majorly wrong. You say flying devils do you mean Fungus Gnats if so they lay eggs that hatch into larvae and they eat the plants roots, to combat this you could water it with mix of hydrogen peroxide and water with a ratio of 1 to 3, it will burn and kill the larvae but if this is an autoflower at week 5 it is about to go into flowering mode so I would just toss the whole thing plant pot and soil then start over fresh, sticky cards work great for controling Fungus Gnats they are also attracted to moisture so you might be over watering as well so make sure there's at least 1'' of dry soil on top before watering. Cheers Dan