ID please

[Khanh]

Dear all,

First of all, I would say sorry if I go in to the wrong topic.

My friend’s tank has this weed over a year (please see picture). He removes manually every other week but it still re-grows there and now spreads more.

What is this weed? How to eradicate it?

Thanks in advance
Khanh

 

[1WildBill]

Hard to say in that pic. Can you get a better one?

 

[Khanh]

Thanks for your reply. I will be there to take another pictures

 

[ericguy1]

The one in the middle on the right side looks just like ET.

 

[Khanh]

Could you please let me know what ET is? How to treat it?

 

[1WildBill]

ET=extraterrestrial. He was making a joke. ET phone home.

 

[Khanh]

Thanks

 

[Khanh]

Thanks