Aqueon Water Clarifier - 8 oz is designed to support clean, balanced aquarium water. Quickly clears cloudy water. Safe for all fish and plants. For fresh and saltwater aquariums. To be used when water has become cloudy or murky. Works by clinging to the suspended dirt particles that cause the water to appear cloudy. This makes them easier to filter out or settle to the tank bottom. When the water becomes clear, replace or clean filter. Shop Aqueon aquarium water conditioners at Uncle Bill's Pet Centers for trusted pet supplies and knowledgeable service in Indiana.