Tropica Riccia Fluitans 1-2-Grow

Japanese Takashi Amano has inspired many aquarium owners to keep the 1-5cm tall cosmopolitic liverwort, Riccia Fluitans, submerged. It can be kept down by tying it to a stone with a piece of fishing line, but new shoots always grow towards the surface, so it may be necessary to prune it with scissor...