Thanks. Yeah I had to reposition those latches till I found the side that fit tightest. And I was already thinking of taping down (from the outside of COURSE) those openings

Thanks for the hole size heads up...I'll make sure openings are tiny if at all. I'm looking into getting a Critter Cage with the sliding/locking lid, I just never did before cause I already had the 10gal tank. After going nuts looking for secure lids, tho, I think it's a good investment. I'll use this lid till I get the other tank.

I think I know the answer already, but since I can only buy one of these, would I be able to get a 20gal and put a young corn in with plenty of hiding spots or would the extra space still be perceived and freak them out?