【2 lbs Small Bags】1/16"(1-2 mm) average size is perfect for fish tank. Total weight of a bag: 2 pounds. The sand in the picture are in a damp state. The gravels delivered to your hand are in dry packaging 【Clear and Use】Please rinse with running water and keep stirring the sand to remove the dust, the water will be a little bit cloudy after you put it into the tank, the filter system will work for 1-2 days to remove it completely 【Pea Gravel for Plants】The rocks are about granule. Work well in improving drainage and air circulation, helping retain soil moisture and prevent soil. It is ideal for small potted planters, bamboo, air plants, cactus, succulents and horticultural sand 【Aquarium Sand】These are a nice decoration for aquarium from FANTIAN. Helps mimic a great environment. Safe for your turtle or fish 【Fish Tank Substrate】 Great for placing in the bottom of tanks for betta, ants, lizards, snakes, tortoises and other reptilian pets. Made your tank look vibrant and sleek! and goes with any décor In the process of hundreds of millions of years of evolution