Dr. Tim's Aquatics Clear-UP Natural Water Clarifier for Freshwater Aquarium 4 fl. oz

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 without the use the harmful chemicals contained in other water clarifiers such as alum (that contains aluminum) and polyacrylamide (a potentially toxic chemical).