Seachem Clarity Water Clarifier. Clarity™ is the ultimate clarifier for both fresh and saltwater systems. It employs an advanced polymeric flocculating agent that is both reef and plant safe. Clarity™ is the only clarifier on the market that does it all! Clarity™ contains compounds that will clear all types of cloudiness in all environments. Water clarifier for marine and freshwater Clears all types of clouding Safe for sensitive coral and live plants Can be added every 24 hours as needed Net Wt. 250 ml (8.5 fl oz)