SPORN Aquarium Decoration, Coral Replica SAFE AND NON TOXIC: Made of fish safe resin material with hand painted colors that will not harm your fish. Crafted from premium quality material it won't fade or discolors while its use. It has a steady base which ensures that it won't flip over and stay in place. Compatible with both freshwater or marine aquarium environments MAKE YOUR AQUARIUM REEF READY: These stunning aquatic decoration will dramatically transform your fish tank into a deep blue sea full of corals and reef all around. It features a realistic, vibrant colored coral with lifelike shapes and accents, perfectly scaled for a 10 gallon to 55 gallon aquariums. REALISTIC DETAILING: The incredible detailing and the beautiful vibrant colors combine to give it an authentic realistic look that stands out. They are versatile enough to complement any themed fish tank decor. Rough and uneven surface allows space for essential bacteria to grow. UNIQUE LANDSCAPE: The mini coral reefs helps replicate the natural environment. Fish feel and look just natural while swimming around these corals. They do not need any special lights, fertilizers or carbon dioxide to grow  just set up and they are ready to brighten up your fish tank. MINIMUM MAINTENANCE: It's realistic, its visually pleasing and whats more? You won't have a hard time maintaining it. Just remove it from the package, rinse well under hot water and place it in the aquarium. Easy to clean it with hot water and fish tank dedicated plastic bristle brush.