Taking every preventative measure

Back at it in a 5x5 I want absolutelutely no chance of mold or pests, dehumidifier, lotssss of air flow temps and humidity dialed in what are some other precautions I can take to have this absolutely dialed in so I don’t even have to deal with it, any advice on equipment too I heard there’s a supplemental light that causes no mold to even survive, also yucca extract? I want no sprays that will cause phytotoxicity

Get a good light, close your tent to prevent flies and whatever getting in. have it clean inside, use fresh coco or if you want try one without perlite ive seen that ideology being used by mass growers.