Hornwort. Likes light of any kind. Filters water good. Is propagated from cuttings has no roots if any... Thrives like goldenrod.
Put a rubber band on the end of the bunch ( if they haven't all ready) put rubber band in in substrate. With in a few weeks, you will be trimming it, and replanting the trimmings in your tank... after a month or two, you will be giving away/selling them.
Mine live in two tanks. Both with hard water, one has bright light, one has low light. I even had some growing in a jar that got little light. They need nothing but fish poo and water.