Reduces stress on fish by controlling the ammonia level. Provides a healthy environment. For freshwater use only. Available in a variety of sizes. Keep your fish stress-free with the Fluval Ammonia Remover controlling ammonia levels in your aquarium. This ammonia remover is a natural ion-exchange media great for setting up a new aquarium or maintaining one with a high population. Designed for freshwater use only. About Fluval For over 30 years, Fluval has built a global reputation for the innovation and dependability of their aquatic products. Having earned the trust of fish hobbyists with durable and convenient products, Fluval's pioneering spirit has kept them at the forefront through their creativity and technical advancement. Their canister filtration systems provide an efficiency and reliability with an ease of use that can't be beat. Since introducing their first canister filter in 1982, Fluval has developed a wide product range to meet the needs of their trusting customers. Size: 2800 gram - 98 oz. Jar.