I've noticed that many fishkeepers have flower pots in their tanks, presumably for hiding spots for their fish. Flower pots are generally made from terra cotta and are orangey in color. On a recent trip to the craft store, I saw some flower pots. Next to the flower pots were colored ceramic pots. Would these pots be safe as well? Does anyone know if the ceramic materials would contaminate the water?? I want what is best for my tank. I just thought that the ceramic looked more decorative...