I am horrible with house plants...I even kill cactuses! So I'm looking for a nice easy plant for both betta tanks. I currently have some leafy thing in each tank. I don't know what type they are. One looks like a fern, the other one is just a leafy plant. Both were labeled fully submersible.
My substrate is not the typical freshwater substrate -- I opted to use black sand (I've anchored my plants with gravel, though). I guess I want a floating plant. Can someone name a couple of hardy ones?