API Nitra-Zorb, a rechargeable ion-exchange filtration pouch that removes ammonia, nitrite and nitrate from freshwater aquarium water in a phosphate-free formula.
API Pond pH Down, gradually lowering pond water pH when levels run too high, neutralising alkaline compounds that limit plant nutrient uptake while staying safe for fish.
API Phos-Zorb, a phosphate and silicate removing filtration pouch that clears cloudy or discoloured aquarium water, also helping corals thrive in saltwater and reef tanks.