Clear-up natural water clarifier - H2O-pure choose the size best suited for your system:_x000D_ 4oz bottle treats 240 gallons (908 liters)_x000D_ 8 oz bottle treats 480 gallons (1,817 liters)_x000D_ 16 oz bottle treats 960 gallons (3,634 liters)_x000D_ 32 oz bottle treats 1,920 gallons (7,268 liters)_x000D_ 64 oz bottle treats 3,840 gallons (14,534 liters)_x000D_ 128 oz bottle treats 7,680 gallons (29,069 liters) clear-up clears cloudy white water. Clear-up is a 100% natural water clarifier consisting of beneficial bacteria, with the ability to "floc" small particles from the aquarium water. T