My cloning bin is comprised of, a piece of plywood for a shelf. A clear plastic garbage bag(to make a mini greenhouse), 80w's of cool white flouresent, some tumbtacks, tape and some wire for suspensions. I always put a single layer of clay gravel or any clean gravel for the clones to sit on inside the bin. 1" 1/2" hole at the lowest point for air and drainage. I gave up on the rubbermaid....