ROWAphos is the professional method of removing Phosphate and Silicate in all types of Aquariums and Ponds. It has the largest absorption ability of any phosphate product and will not leach back in to the water.ROWAphos is the most effective phosphate remover on the market today. It is widely used in Europe and is now finding success in the United States. ROWAphos was developed in Germany to reduce Phosphates in the Main Water Supply. It is being used in lakes and ponds and has been refined for the Aquarium Market. ROWAphos will not only remove phosphates but will never release them back into the system.It has the largest absorption ability of any phosphate product in the market today. This saves the need for immediate removal once the media is full. The product is easy to use and will improve the water quality wherever Phosphate or Silicate is a problem. It is of interest to Marine and Reef Aquariums where its unrivalled capabilities have shown it to be extremely beneficial in the control of nuisance algae’s and the growth of hard corals. Unlike other phosphate removal products, it does not shock the animals or cause problems when used regularly. In fact constant use of the product is recommended, as its abilities to control nuisance algae is a major benefit. Extremely high binding capacity Needs very little room in the filter system Simple Handling (filter bag included) No influence on pH Does not release toxic substances back into the aquarium when exhausted 100ml of RowaPhos will lower the phosphate level by 1ppm in a 50 gallon salt water tank (or a 170 gallon freshwater tank).Removes 12G of phosphate per kg of media:100mL - Removes 1ppm phosphate from 630 gallons of freshwater and 315 gallons of salt water250mL - Removes 1ppm phosphate from 1580 gallons of freshwater and 790 gallons of salt water500mL - Removes 1ppm phosphate from 3160 gallons of freshwater and 1580 gallons of salt waterTips for Use:To obtain the best results from RowaPhos and to keep you.