[David]

Yes, I have grown U. gibba before, but just like my U. aurea and Aldrovanda, they will thrive for a couple for months and start to decline... Not sure why. Perhaps it's the water chemistry.

So, I'm not the right person to ask about their cultivation. Perhaps it's my growng conditions indoors... to hot I think. But other members I know had great success with gibba. They are just placed in any container/pot/pond/etc in the garden under sun and rain, and they thrive for them.