Notice: Not “Glow In the Dark”! The Glowing Effect will only happen under actinic lighting, blue or purple light is recommended. Glowing artificial mushroom offers a fantastic sea world landscape. Size: 10 x 6 x 10 cm ( Approx.). Made of non-toxic, colorful and vivid silicone which looks extremely realistic and natural. Strong Suction cup base can easily suck in the smooth aquarium.