Hornwort. It grows like mad, and requires little. I don't grow it any
longer, since it is purely a floating plant, and it grows so dang fast, it
tends to shade stuff beneath it in a hurry. But for cardinals in a small
tank, you'll have fun with it.

-Bruce Geist
Donovan N wrote in message
...
Can anybody suggest an undemanding floating plant that I can add to my
aquarium to make the cardnial tetras feel a bit more secure?

Also, while I'm here... Any suggestions on a particular type of cory
that can be added to a six gallon tank? i.e. a species that stays small.

thanks for the input

--donovan