the one on top is a Dracaena, a non-aquatic, and the one on the bottom is definitely 'red hedge' (which i think is alternanthera sp.), but it is also non-aquatic. If you leave them underwater, they will wither and die, and pollute your tank.
the one on top should be able to just be put into a pot and grown completely dry. it'll grow really slowly, but should live.