Sunset sherb x sunset sherb auto

Ran into big issue my white widow in full flower and found pretty sure fungus gnats on all my new seedlings and my sunset sherb going into full veg so i sprayed ipm all over 2 days after same thing took all the plants out and soil drenched with ipm very scared to burn or mess up especially my white widow finished its preflower strech n is in full flower today i seen there was still fung gnats or some type of bugs in soil so used ipm and soap made apple cider vingear mixed with soap traps just very stressful week after 12 hours i checked up on them again still seen bugs in the works so i used hydroporxide mixed with a gallon of water and treated all the plabts and made a spray bottle of a liter n sprayed outer edgeds andywher they could hide i fliped the favric pot tops outward and sprayed in sides and outsides also gave a bigger dose of canna root enchancher also great white mycro mixed floraflex micro with foxfarm big bloom for a nitrogen boost hoping the hydroporxide works im all out now any tips much appciated will post white widow also cut bottom 2 nodes of sunsetsheb and topped it curently the tallest the strawberry nuggets x livers bx1 is 2nd but twice as short 2 days behind bt has established 4 nodes working on 5 don think i will top comparing sizes looks like its goin be short bushy will post