For use in fresh, marine, and drinking water

Natural elements, including Iron, Calcium, Manganese, Magnesium, Potassium, Phosphorus balance trace element levels in the water

Removes trace metals , organic contaminants; antisepticizes and deodorizes

Density 2.60-2.66 g/cm3 , powerful absorption; regulates pH levels

Ideal medium for growth of nitrifying bacteria to maintain ecological balance