Growing water wisteria

[florapix]

I got this tiny water wisteria plant by surprise, it was in a bag with a plant I'd purchased and that was over 3 months ago. I stuck it in my fry tank and now I've got 5 of them - 3 big ones and 2 small ones. I really like them and I'm thinking of moving the big ones to my 29 gallon tank. I'm using them as floaters, will they do okay in the new tank or will they start to die on me?

[CasCat]

I think you've got the wrong plant there, florapix - that's water sprite, not wisteria. The leaves are way too thin and they're all over the place, not symmetrical like wisteria leaves.