I was surprised, when I recently read the book: "Aquarium and the water plants", that Sansevieria could show good results, both in dry, and wet conditions. They say, by gradually increasing the water level and reaching the half-submerged point, one can get an interesting results from Sansevieria. The character of growth changes and the tough round rosette of leaves looks way more intersesting, then the usual ground form. I'm going to experiment.