Calcium And Magnesium Ions Filtratlon Material for Aquarium Fish Tank Fresh Water Seawater

1、Rich in calcium, magnesium and sodium ions, can supplement multiple mineral elements, balance PH value and quickly clarify water quality. 2、Active pore cavity structure, light specific gravity, large surface area, culture nitrifying bacteria. 3、The special water substructure can catch suspended particles, strengthen the biological decomposition and promote the biological metabolism. 4、Used for upper filtration, bottom filtration and outer filtration of fish tank. 5、Suitable for fresh water,