These plants are actually a very hardy house plant that can be incorporated in your aquarium, but NOT totally submerged!
They are perfect (EXTREMELY HARDY) Terrarium / vivarium plants
 
See the last picture and you will notice we suggest you use them as water purifiers in your filtration system or as part of the décor on top your aquarium with their roots into the aquarium.
 
If used correctly these plants are EXTREMELY HARDY and always pleasing to the eye.