I am not so convinced on all the fake plants from craft stores. A lot of them have metal wires under the plastic so you arrange the plant however you like. I have tons of these I used for reptiles, but I don't think they would be good for under water. I think as long as there is no metal, you will be fine, just rinse/wash it really well as they are not intended for aquaria. A lot of the more colorful fabric ones are made with dyes as well. Stick with plastic only.