vidaXL Volcanic Rocks, Lava Accent Rocks for Aquarium, Volcanic Lava Stones for Succulents Cactus Pots Terrarium Plants Vase Fillers, 25 kg Black

• 【Versatile Applications】: Not just for aquariums, these Black Volcanic Rocks are also perfect for garden landscapes, planter beds, and other decorative rock applications
• 【Biological Filter】: The volcanic lava stones can serve as effective natural biological filters, improving water quality, oxygen levels, and control nitrates
• 【Decor Element】: They offer natural aesthetic appeal to your fish tank or aquarium, creating a captivating underwater landscape
• 【Natural Material】: The volcanic rocks are 100% natural and safe. This makes them suitable for both freshwater and saltwater aquatic environments
• 【Product Details】: The vidaXL Volcanic Rocks comes in a 25 kg pack with rock size ranging from 3-5 cm

Product description The volcanic rocks are a great addition to the bottom of your fish tank or aquarium, helping you create a beautiful underwater world! Natural material: The volcanic lava rocks are 100% natural and safe which won’t affect water's pH or chemistry and are suitable for both fresh and saltwater environments. Decoration: With beautiful natural shaping, the lava rocks provide a colourful and detailed focal feature to your fish tank or aquarium. Biological filter: These volcanic stones make for great natural biological filters that improve water quality, boost oxygen levels, and control nitrates for a cleaner and healthier habitat. Wide applications: The volcanic rocks are also suitable for garden landscapes, planter beds, and other landscaping rock applications. Colour: Black Material: Volcanic rock Size: 3-5 cm Weight: 25 kg Directions Used as intended