I keep Java Fern Windelov in my tank. It is attached to a "driftwood" log, and has been in several different setups. It started life in a 29 gallon tank with 110 watts of AH Supply light. Then it was shifted to a 45 gallon tank with the same light, followed by a light reduction to 72 watts. Next was a 2.5 gallon nano tank, with a desk lamp over it. And, now it is back in the 45 gallon tank with 72 watts. In all of those settings it has grown very well and looks very healthy. All but the nano tank had CO2 injection at about 30 ppm.

My conclusion is that the plant will grow in just about any setting. I should add that all of those setups included EI fertilizing, which I think is also important. Right now I am seriously thinking about restarting the plant, since it is now just about the size of a soccer ball, if not bigger.