havent tried this out yet but looks promising

[krap101]

http://www.tropica.com/go.asp?article=468

that shows what plants are toxic to other plants. if you want to get rid of duckweed it says to get some dawrf hairgrass (parvula) etc etc

 

[sawallace]

Updated link

 

[krap101]

http://www.tropica.com/go.asp?article=468

oh sorry

ic it doesnt work

on the right side click on this one
Allelopathy - chemical warfare between aquatic plants - part 1

i guess there isnt a direct link

 

[Guest]

Good read, Krap, but it basically says that allelopathy doesn't really work in the aquarium, sorry...

From the article

Hopefully, this article has provided you with sufficient knowledge so that you are naturally skeptical next time you meet these allegations on miraculous algae control by means of allelopathy. The best algae control will always be a densely planted aquarium with a limited stock of fish combined with frequent water exchange. In particular the last point probably prevents allelopathy to become important in planted aquaria since the toxic chemicals never build up to significant concentration levels and therefore the effect, if any, will never materialize.

Thanks for giving us a good link sawallace, sent you some Kudos!

 

[krap101]

oh hey haha didnt see that that was a link. its usually bluer it think