AZOO ANTI-AMMONIA ROCK

Chemical filter medium for freshwater aquariums
 
FEATURES:
Natural environmentally-friendly mineral, composed of various kinds of zeolites.
Rapidly absorbs ammonium and nitrite ions, preventing aquatic life from being
      poisoned by bad water conditions.
By helping purify water, facilitates a more stable pH value between 6.5-7.5,
      reduces frequency of needed water-changes, increases the stocking density
      potential and the survival rate of fish
Removes unpleasant odor, chemicals and harmful substances in the water.
500g is sufficient for each 100 litres of water. Replace the material regularly
      on a 3 monthly basis.