Resin Filter Media Ammonia Block Resin Products Ammonia Block eradicates poisonous ammonia infinitely quicker than other products on the market. It removes all ammonia and ammonium from aquariums within 4 hours. New aquariums can be fully stocked once set up without the fear of an ammonia spike or losing fish. Resin Products Ammonia Block uses a unique premium-grade ammonia selective ion-exchange resin to quickly remove ammonia from aquarium water - can be used in both freshwater and marine aquariums.Combat Toxic Ammonia Fast — Protect your fish and maintain pristine water quality with Resin premium ammonia removers. Specially formulated for freshwater and tropical aquariums, these fast-acting solutions neutralise harmful ammonia, prevent stress, and support a healthy nitrogen cycle. Ideal for new tank setups, emergency spikes, or routine maintenance. Keep your aquatic life thriving with trusted Resin Filter ammonia control—safe, effective, and reef-friendly.Available in single 100g pods or a box of 3... Single 100g pod for 25 - 150L Two 100g pods for 150 - 350L Three 100g pods for 350 - 600L Removes ammonia & ammonium from your tank Stock new aquariums without the risk of ammonia spikes Ammonia Block is a premium grade ammonia selective ion exchange resin Unique round pod’s perfectly fit inside your internal/external filter Suitable for freshwater, tropical or marine aquarium use