The particles of coral sand vary in size and specification. It contains rich micropores, which can allow a large number of nitrifying bacteria to survive. It can generally be used for 8 to 16 months without replacement. There is no fixed requirement for how thick the coral sand should be placed in the aquarium. Generally speaking, it can be divided into thin bottom sand and thick bottom sand. As we all know, once there is bottom sand in the tank, it will establish a nutrient zone on the surface of the sand after it operates normally for a period of time. Coral sand can create a wavy aesthetic effect, imitating the shape of the natural seabed, and creating a natural environment for aquarium creatures.

Due to its rich pore structure, it can also be used as a carrier for biological filtration systems to cultivate nitrifying bacteria in large quantities. It is a natural marine filter material. Its biggest feature is that it is rich in micropores and is suitable for the survival of a large number of biochemical bacteria. It can be used as the lower (inner) layer of filter material.