Aquatic sand comes in many different shapes and colors. It can be blue, yellow, black, pink, green, grey, purple, or made up of many different colors. In the following section, we will layout the different sizes of aquatic sand that you may find on the market:
Large sand: 2 mm to 5 mm. This is more like gravel.
Medium sand: 0.5 mm to 2 mm.
Small sand: 0.02 mm to 0.5 mm.