Thanks a lot for the tip, i'll go check tomorrow on auto workshops around (those we have plenty and i'm sure i can find it!
And well the place you mention here in Mexico City is called Xochimilco (awesome place BTW), well today i went there i was most impress to hear in all aquariums that aquatic plants where all imported, it just didn't made any sense since we have such prolific lands.
Well i can happily inform you that there are THOUSANDS of aquatic plants there, and as you mention it is a lake with lots of canals and Chinampas (floating islands), where people grow mostly flowers, vegetables and of course corn. It wasn;t easy finding then though, not many people buy them, but i found this guy that he only grows aquatic plants, he has his own canals where he grows national and imported plants, and he also gives amazing prices!
Of course i was like a kid on a candy store, he has this beautiful tanks to display all his varieties and then you can go back and pick them up yourself (not a nice thing to put your hand in the canal though eewww LOL). Anyway it was a lot of fun, and i spent hours there and got:
2 Trichomanes Javanicum "Aqua Fern"
1 Little pot of Hydrocotyle Verticillata (notice how i'm starting to use scientific terms?!?!
1 Moss Ball
2 Peat balls (one for my filter to lower the PH as suggested)
1 Daisy (Margarita
that's what he called it, and says it's a native plant, looks like a little tree sprout)
1 Cabomba (it was a left over that nobody wanted so i brought it home hoping she will come to life with few care and love)
I'm so excited and it took me like 2 hours to plant them all and give them their right space in the tank, i think it will look awesome once they start growing!.
Thanks a lot everyone i'll keep nagging you and reporting my progress.
PS. Now i want another big tank