Other than those two I've found crypts, abubias, and vals to be very easy even in low light. Wisteria and other hygros are not that difficult either.Thanks I will have to try java fern and java moss. My light is a coralife and im not sure what the wattage is but it is bright!
Either way it should survive in your tank. If it looks like the ball has short green rabbit fur, its a true Marimo ball. If it looks like a wadded up ball of strings with tiny leaves, then its a wadded up ball of Java moss.Im not sure what kind of moss it was. They weren't on a string just sitting on the bottom of the tank.