tried 'em.. i got one pack for each of my six tanks (they were on sale). five bulbs per pack, sometimes six.. only THREE bulbs sprouted. so far i have a lilly in my shrimp tank (it's HUGE and they love it
), a lilly starting in Zen's tank (after three months of being buried in the gravel..) and some kind of onion that i ended up yanking out of Roxie's tank after it started rotting. all the other bulbs got tossed during routine water changes because they were growing fuzz
all in all, not worth it.