now, you can use your extra bottom box (remember, we bought two of them) ... the spare lid can be flipped upside-down and used as a humidity dome, and your spare lid can be cut for 1 or 2 large net pots holes, or a bunch of small RapidRooter plug holes ...

now, that's how I do it ... if you do the same, you'll be glad you did ... if you do it differently, don't whine to me