Hi,

Some months ago, I added some new plants to my tank. Unfortunately, there
seems to have been an unexpected hitchhiker. I've attached some links to
pictures of this floating weed. Each 'unit' of the plant is about 1-2cm in
diameter.

http://members.rogers.com/asonthebadone/plant1.jpg
http://members.rogers.com/asonthebadone/plant2.jpg

Anybody know what kind of plants these are? And if so, are there any
effective methods that I can control it with? (Other than physical removal,
which doesn't seem to work all that well).

Thanks in advance,

Truong