>>109412i've always heard that terrestrial utricularias are the ones that are spread prolifically. i keep all of my plants in separate containers though.
have you thought of doing tissues cultures with the dionaea and experimenting with small plants in different mediums to see which works best? i was just browsing through this:
http://www.terraforums.com/forums/showthread.php?126214-Small-tissue-culturing-success/seems like a neat way to get a high yield of plants for experimenting.