Penn Plax Hideaway Pipes Aquarium Decoration Realistic Look with Green Moss Like Texture Three stacked hideaway pipes with realistic looking moss add color and texture to your aquarium. Bright green moss adds a unique look to your tank and mimics the color seen in nature. This aquarium decoration provides visual interest for you and your fish. Holes provide a space to pass through, to rest, or hide reducing stress and aggression. This pipe hideaway is perfect for cichlid tanks since this fish is territorial and must create their own space. This aquarium ornament mimics what is found in an oceanic environment. Made of safe durable resin, this aquarium decoration is safe for use in both freshwater and saltwater aquariums. Pipes measure 3 inches long by 3 inches wide and 2.8 inches high.