I'm setting up an exoterra 12 x 12 x 18 for my chorus frog Linus. About 40% of the floor space will be a shallow water part (3.5"). I'd like some semi-aquatic plants in there that can grow partially emersed. It would be best if they can root on wood or rock as there won't be a deep substrate.
Has anyone tried java fern or Anubias barteri nana this way? Maybe Cryptocoryne wendti (the latter has to be in substrate I guess)?