Thanks to Richard, he's sure leaving legacy in (if I can say) south east asia

I do have some problem with algae when the colour of the water become clear and bright I noticed that algae are attacking some of the plant's axis.
Then I put more leaf litter, after a week the water become dark and the algae has gone.
Bactrus: I grow aldro outdoor, the pond receive about 3 hours of sunlight.
David: I do have tried to grow them in small aquarium with a co2 reactor, but I've kill them too. never give up I'll try it again.
Sorry for my poor english hope you can understand what I'm writing....
[IMG]file:///C:/DOCUME%7E1/Windows/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG]