Philippine sand, shell sand, coral sand used for aquarium landscaping filtration
Widely used in fish tank landscaping
For example, Haihong (large particles are generally used) and Sanhu aquarium (small particles are generally used) are used as filter materials (large particles in thick sand systems), and can also be used for photography scenery, beaches in amusement parks, etc.
Philippine sand is also known as shell sand, coral sand, and porous sand. It is a natural filter material for bacteria cultivation and water purification. It releases mineral elements and is beneficial for freshwater aquaculture and regulates PH.