Aqua one ammostop ammonia & nitrite reduction 2 sizes. Instantly improves water quality by neutralising harmful levels of ammonia and nitrite to levels safe for fish.. Regular partial water changes are recommended for maintaining water quality, along with building a good biological bacteria culture in your filter by regularly using aqua one’s bio starter.. Features. Stops toxic ammonia. Instantly detoxifies harmful ammonia. Lowers nitrite levels. Directions. Add one capful 10ml per 100l of aquarium water whenever ammonia nitrite levels become too high.. Repeat dosage daily along with water changes until water quality returns to a safe level.. Suitability. Coldwater, tropical and marine aquariums