They don't say exactly what they are, of course
My tanks are unfiltered, so that part isn't a worry. If they look to be getting too big, if indeed they grow at all, I'll remove them.
I think I might have a Java fern already...cause it does appear to have rootlets growing near the tips of a couple of its leaves
Opinion on Moneywort? Possible Java fern is in with Chicory, my delta. I gave Ghost a Moneywort over the weekend. (I'm an addict, I see something cute and buy it if it's only a few dollars)