Volcanic Rocks 25 kg Black 10 30 cm vidaXL

General description The volcanic rocks are a perfect addition to the bottom of your fish tank or aquarium, helping you create a beautiful underwater world. These 100% natural volcanic lava rocks are safe and will not affect the water's pH or chemistry, making them suitable for both fresh and saltwater environments. With their beautiful natural shaping, they provide a colorful and detailed focal feature to your aquarium. Additionally, these volcanic stones serve as natural biological filters that improve water quality, boost oxygen levels, and control nitrates for a cleaner and healthier habitat. They are also suitable for garden landscapes, planter beds, and other landscaping rock applications. Technical specifications Colour: Black Material: Volcanic rock Size: 10-30 cm Weight: 25 kg Other information

【Biological Filters】: Improves water quality, boosts oxygen levels, and controls nitrates, offering a healthier habitat for aquatic life 【Natural Material】: Sourced from 100% natural volcanic rocks, safe for both fresh and saltwater environments 【Decorative Element】: With unique and natural shaping, these black lava rocks add an aesthetic touch to your aquarium 【Wide Applications】: Suitable not only for fish tanks and aquariums but also ideal for garden landscapes and planters 【Product Details】: Comes in black color, weighs 25 kg, and measures 10-30 cm each, allowing for plenty of configurations