I'd go with smallvle's advice. Just get a few more filters if you can save up for them.
If you can't save up for them you could always just buy a huge pickle jar/hurricane vase at the store, a yard sale, or find one that you or your family already has (try asking your grandparents) and keep one of your guys in there till you can figure the whole mysterious fogging phenomena out or afford the filters. =]
Also what kind of dividers do you have? If you have plexiglass/acrylic dividers you might not have enough holes drilled in.