Nutrafin Aqua Plus makes tap water safe for fish by removing chlorine and chloramine and neutralising heavy metals. Stress reducing formula protects fins and scales. Contains pure herbal extracts which visibly reduce stress and provides a protective coating to protect scales and fins from trauma. Treats up to 1000 litres Use for: Adding new water. New tank set ups. Water changes. Transporting fish. Treating cuts and abrasions. Double dose for marine aquariums. For fresh and salt-water use.