I've never actually grown this plant, but i was thinking of it before i found out it likes alot of light. I found this a while back from a different forum -
"Ideally, water on the soft and cool side would be good but not needed. It does however need a lot of light and CO2. It will simply fall apart if it is shaded.
Algae can be a big problem. DO NOT USE H2O2!
Just treat it like any other light loving plant and it should be fine"
I'm always unsure of these types of plants as alot are not true aquatics and either are very slow growing when submerged or they just don't grow i.e. Plagiomnium sp.