On Saturday I bought a few plastic plants from "Michaels" (an arts and crafts store) with the mindset that they would make great aquarium plants. What I didn't consider is the metal rods inside the plants. They look great IMO, much better (and cheaper) then plants made specifically for the hobby. Does anyone use these? Does anyone know if the're safe? I'm under the impression that if the rods are stainless steel they should be alright but I don't know if they are. The brand is "Garden Collection Greenery".