Pretty much what the title says. I bought a single anubias about a week ago and just noticed yesterday that there's some green fuzzy stuff growing on the edges of some of the leaves. Is this bad, or is it just moss or something?
its most likely algae...You could try to cut your photo period (amount of time your lights are on each day) back a little..
Its hard to grow clean anubias, but they need very little light to thrive.
The best anubia setup I've ever had is in my little planted 10g, currently with Coralife Colormax 10w CFLs (2). Grows java fern like crazy too. I don't add anything to the tank. Just weekly 50%+ water changes.
If you really want to you can put anubias (anubias nana anyway) in a gallon jar planted like a regular plant.. with potting soil...put a lid on it, and put in the window...Let it grow nice and big, then move to an aquarium