vidaXL Red Volcanic Lava Rocks 10-30 cm - Decorative Stones for Aquarium and Garden Landscape, Natural Bio-filter Stones, 10 kg pack

The volcanic rocks are a perfect addition to the bottom of your fish tank or aquarium, helping you create a beautiful underwater world! Features: 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... - Manufacturers part number: 155323

• 【Biological Filter】: Volcanic rocks serve as natural bio-filters, enhancing water quality, oxygen concentration, and nitrate control for a healthier habitat
• 【Product Specifications】: 10 kg pack of volcanic rocks; Red, measuring 10-30 cm for versatile usage in fish tanks, gardens, and landscaping projects
• 【Natural Material】: Made of 100% natural volcanic rock, posing no harm to water chemistry, ideal for both saltwater and freshwater aquariums
• 【Landscaping Use】: Suitable for diverse applications- fish tanks, garden landscapes, planter beds and other decorative rock applications
• 【Decor Element】: Vivid red hue volcanic rocks enhancing aesthetic appeal, adding interesting detailing to your fish tank or aquarium