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. The result is clear water without the use of the harmful chemicals contained in other water clarifiers, such as alum (that contains aluminum) and polyacrylamide (a potentially toxic chemical). Directions: shake well before using. Dosage: add 5 ml per 10 gallons of aquarium water. For best results, temporarily turn the filter off, add clear-up over the entire aquarium water surface and wait 10-15 mi