duckweed does grow roots. [\QUOTE]
1-1 1/2 inches long as the person i quoted said? please provide pictures because this is something i'd love to see
because everyone that has true RED red root floaters that i've ever talked to has high light AND Co2
Perhaps 1.5" was an exaggeration. Checking my handy ruler, I'd say the roots were about 1-inch. My endlers liked to nibble on them. These roots are basically a single thread-like structure per plant. Nothing like water lettuce and red root floaters.
On another forum, it was suggested by a red root floater owner, that when disturbed the red would fade from his plants roots. Left alone, the red
would come back. I'm sure he had a med/high light co2 tank based on the other plants in his gorgeous 20g. I know my lfs advised most floating plants require fairly high light... In most tanks with said light, co2 is needed for the other, submerged plants.