12" and 3" wide?! AWESOME

well then they still have quite a road ahead of them...
i planted babies on a driftwood, and they grow for a while then stop. Then a new leaf or two comes from the rhizome, grows a bit higher than the first, and then stops. this process repeats, and so i have a really really dense bunch of java fern... is it ok to just prune away the smaller leaves every week, and leave the bigger ones? otherwise its a lot of fern