Natural white stone for aquariums 0.6-0.8 mm (10 kg/bag) 100% natural stones. Suitable for aquariums, gardens, flower pots, glassware, and vase decorations. Completely non-toxic like river gravel. The color of the stone will not fade over time. Please wash 5-6 times before use. Size: 0.6-0.8 mm, small Weight: 10 kg/bag