I'm just wondering because I want to put a few plants in a tank without
mucking with substrate(it just has plain gravel) As of right now I put a
couple Java Ferns in. I'm trying to get rid of my plastic/silk plants, even
though the one tank they will have to stay because of the habits of the one
resident(crayfish).

--
Janine Hudson
Sure. Fine. Whatever. -Syzygy
I have. I did. It's done. -Fight the Future
Duct tape is like the Force, it has a dark side and a light side and it
holds the universe together.
I'm completely normal, just the rest of the world is nuts...
There are lies, damn lies and statistics!

"Dunter Powries" fech.redcap@spedlin wrote in message
...
JHudson wrote in message
news:xrWUb.320$964.284@edtnps84...
Hi,
Just wondering what plants don't need a rich substrate, but take
everything
from the water.

Hornwort (Ceratophyllum submersum) and riccia grass (Riccia flutans) - if
you're looking for floating plants to suck up macro-nutrients (?) under
moderate lighting, either would be terrific. Water sprite (Ceratopterus
thalictroides), although usually rooted, also makes a fine floating plant.

Most true aquatic 'stem' plants, although they will develope complete root
systems, take nutrients readily from the water column. There are hundreds
available commercially.