vidaXL Volcanic Rocks - 10 kg - Black - 5-8 cm

VIDAXL

【Natural Material】: The volcanic rocks are 100% natural, safe for your fish, and won't affect the water's pH or chemistry 【Versatile Usage】: Suitable for fish tanks, garden landscapes, planter beds, and other landscaping applications 【Product Details】: Comes in black color, made from volcanic rock, sized 5-8 cm, and weighs 10 kg 【Decoration】: Beautiful natural shaping provides a colourful and detailed focal feature for your aquarium or fish tank 【Biological Filter】: These rocks are natural biological filters to improve water quality, boost oxygen levels, and control nitrates