Features: 1.Originated from the bottom sand of natural river basin, no artificial addition of dyeing ingredients. 2.Colour is like crystal, show neuter, do not affect water quality, dry state, color shows dim slightly. 3.After being wetted with water, will form a color enhancement effect, which makes people shine at the moment. 4.Multi-purpose, can used in many places, aquarium, fish tank, flower pot landscape, tortoise tank bottom sand, platform scenery, water treatment filter material, etc. 5.Applicable to fresh water and seawater dual purpose, convenient and practical. Specification: Item Type: Aquarium Decoration Crystal Sand Material: Sandstone Color: As Pictures Shown Volume: Approx. 1000g/Pack Single Length: Approx. 3-5mm/0.12-0.20inch PackageList: 1 x Pack of Crystal Sand Note： Note: 1. The product is irregular, the real received weight is subject to, the error is 0-50g. 2. Long-term use will accumulate dirt, it is recommended that regular cleaning. Usage: 1. Open the bag and put it into the cleaning container. Wash it 2-3 times. Dust has been removed, water plants mud does not wash 2. Shop into the bottom of the cylinder, with a sand shovel or other flat object, according to the need to pave, or make undulating shape.