vidaXL Volcanic Rocks Lava Accent Stones for Aquariums, Landscaping, and Gardening - Red, 10 kg

【Natural Material】: This product consists of 100% natural volcanic lava rocks that won't affect water's pH or chemistry 【Product Specifications】: Coloured in red, the volcanic rocks weigh 10 kg and range in size from 10 to 30 cm 【Aquatic Decoration】: Add a colourful and detailed focal point to your aquarium, enhancing the aesthetic value with these bright, red stones 【Wide Applications】: Besides aquariums, the lava rocks are suitable for garden landscapes, planter beds, and other landscaping rock applications 【Biological Filter】: These volcanic rocks provide a natural filtration system, improving water quality, enhancing oxygen levels, and controlling nitrates