I grow Aldrovanda; in an earlier note to the group I mentioned that it
was staying about six inches long, now it is about 20 inches with maybe
four or five growth points. Conditions: outside with 4 or so hours
direct Florida sun in about one gallon of water. Two things that seemed
to help mine, (or maybe it was a friendly water sprite) 1- I overtop the
water every week or so to wash off any floating detritus, 2- scoop up
generous numbers of cyclops, water fleas, or whatever they are from some
of my other water trays to add for food. Can't guarantee this will
help, but FWIW,
Tom in Fl