Crinum natans does have any
special requirements as to water or light and it even tolerates weakly
brackish water. Be sure, however, to cover only half of the bulb with a
substrate poor in nutrients and decomposing organic compounds - if the bulb
is covered completely it will going to rot. Crinum natans it is only
suitable for large aquaria where it proves to be a graceful solitary plant.
It is a slow growing plant but once it has attained its full size the wavy
leaves will float on the surface - 'natans' means floating! The plant is less
light demanding and has broader leaves than Crinum calamistratum.
Older individuals willingly set adventitious bulbs, and these new bulbs are
the easiest way of propagating the plant though propagation from seeds is
quite easy, too. Crinum natans is 'cichlid-safe' plant because the
fish do not like the very sturdy fibres of the leaves. See also fish-proof
plants from Tropica Aquarium Plants.