Anybody know if these ornaments are 100% aquarium friendly. They seem like they would be cool decoration and they are cheap.
http://www.ebay.com/itm/Aquarium-Moss-ball-5Pcs-Marimo-Moss-Aquarium-Plant-Underwater-Fish-Ornament-/302040199597?&_trksid=p2056016.m2516.l5255