be patient with bulbs........ive had a few grow after 6 weeks in the tank doing nothing......
duckweed will grow rampant in the tank..........alot of peeople consider it a nuisance
and in alot of states its illegal, cant get it here in SC
so if you dont want it, throw it in a a ziploc bac and seal it and then throw it out. that way theres NO chance of its survival, and / or getting into a local waterway