I have a 32 qt tub rack system. The tub has an ever so slight gap between the top and the rack itself. I used a soldering iron to put two rows of air holes in the sides.
My 1-1.5 year old Corn has been hanging out near the front in order to, I suspect, look for a way out.
Is it OK to keep corns in tubs with no lid? Also, if I put the lid on, how many air holes are enough for the tub portion??