[galettojm]

By looking at the color of the shots and the shape of the flower I think this plant is a Ammannia Gracilis:

Bye,

Juan

 

[galettojm]

Nobody know for sure if I am right ?

Bye !

Juan

 

[galettojm]

thank you aaron !

when I started fertilizing the water the plant took a more reddish color.

Look:

Bye !

Juan

 

[galettojm]

That's a really nice tank you have there Juan. Its' very colorful and vibrant.

Thank you aaron !!!

But it didn't look like that a few months ago. Look at my evolution post: http://www.aquaticplantcentral.com/forumapc/aquascaping/45515-180l-tank.html

Bye !

Juan