Duckweed questions?

[scholar]

How do duckweed multiply? and how much light do they need, wattage and hours per day?

I have some that i am using hoping to suck up the nitrates in my african tank and in my small tnk to control hair algae.

Thanks,

 

[Tim Bo]

IME duckweed will grow uder pretty much all light conditions - some of my tanks get about 10 hours on average of flourescent light. I'm not sure what the optimal amount of light is. i know that in nature it grows in full sunlight as well as dense shade.

Reproduction : http://www.mobot.org/jwcross/duckweed/duckweed-anatomy.htm


http://www.fnzas.org.nz/320+B6JnVzZXJfcGxhbnRzPTgwJmNIYXNoPTYzNjI0ZWE0M2Q_.0.html

http://www.petfish.net/duck.htm

 

[PumaWard]

Duckweed usually grows by vegetative reproduction, kind of like spider plants. It's been my experience that they like highlight, but also do okay in 1.5 WPG. HTH