Hydor H2Show Lost Civilization - Crystal Skull Decoration 5" x 3.5" x 4.5" Create a spectacular 3-D scene in your aquarium with H2Show Worlds! Three scenes to choose from; Magic World, Lost Civilizations and Atlantis. Ornaments made of non-toxic materials and are hand-painted. Made of clear resin, which allows light to shine through when used with H2Show LED lights. Choose from blue, red, green, white or multicolor. Use with H2Shoe Bubble Maker to add aeration and bubbling effects.