>>1563433you need to put the entire bin in a black trash bag and seal it up in your closet for a couple weeks until the substrate is colonized
then take it out and have holes with micropore tape or poly fill
leave a fan running in the room and have a little cologne sprayer filled with water, whenever the walls don't have water droplets on them open it up and spray additional water to maintain high humidity and still have airflow
once you get pins and small fruits the humidity should maintain itself, but airflow is important