I've got a coolidor and two foot looker humis that have a lot of space but not enough single stick storage. Ive got a bunch of empty boxes i wanted to use as trays but am wondering if i should take the tops off or on? seems like i would leave on cause if you buy a box you wouldn't rip it apart, but also i start thinking about allowing them to "breathe" with the lids off kinda like trays... opinions?