Fritz Clarifier Aquarium Water Conditioner rapidly cleans your aquarium for crystal-clear water and healthier creatures. This cleaner pulls together fine particles， so they’re either removed by your filter or settle to the bottom of the tank. It’s safe and effective for freshwater， saltwater， reef aquariums and pond. It won’t harm your fish or plants， and it won’t contribute to cloudy water problems. It even improves the efficiency of your filter， keeping your tank looking fabulous.