Just got from Polyart. What is it?

[gumball]

Hi peeps, can someone identify what plant this is? It's tied down to a block of wood using fishing line.
photo.jpg

[Shadow]

Myriophyllum species, probably Myriophyllum mattogrossense

[gumball]

wow, looks about right. thanks!

[gumball]

Is it okay if it's on the piece of wood? I do not have substrate at the moment.

[Shadow]

its ok as long as you dose liquid fertilizer. Plant able to take nutrient either via root or leaf.

[gumball]

ah okay thanks.

[gumball]

Hi! So my plant seems to be doing okay. One thing is that it seems to be spreading themselves out while their base is tied to the wood. How should I arrange these plants...? I do not have substrate..