vidaXL Volcanic Rocks - Natural Lava Accent Stones Beads for Aquarium and Gardens - 25 kg of Bio-filter Stones in Black

【Wide Applications】: These versatile rocks can be employed to landscape your garden or add interest to your plant beds, serving as a fantastic decor for landscaping applications 【Black and Bulky】: Ships in black with a considerable weight of 25 kg, these volcanic rocks each measure from 5-8 cm, creating a dramatic underwater world 【Detailed Design】: The rocks provide a thorough, detailed decoration with their natural shaping, adding an exciting focal feature to your fish tank or aquarium 【Natural Material】: Stunning volcanic lava rocks, completely natural and safe, perfect for crafting a beautiful aquarium landscape for your fish 【Aquarium Filter Aid】: These volcanic stones not only enhance your tank's beauty but also act as a natural biological filter, contributing to cleaner and healthier water