Acquamarine Phosphate Eliminator Saltwater is a natural freeze dried bacterial compound which will eliminate phosphates from your aquarium without the use of harmful chemicals. Acquamarine Phosphate Eliminator Saltwater is totally safe all for aquatic life and plants. Use Acquamarine Phosphate Eliminator Saltwater to remove phosphates which accumulate in your tank through the accumulation of waste products and the break down of foods and other organic matter. By reducing the phosphate levels your reduce the stress on fish and invertebrates, especially sensitive corals.