Seachem Prime - 250 mL Seachem Prime - 250 mL is a concentrated freshwater and saltwater conditioner that removes chlorine and chloramine while detoxifying ammonia, nitrite, nitrate, and typical tap water heavy metals. Seachem Prime for Aquarium Water Changes Prime is a practical choice for routine water changes, new aquarium setup, livestock additions, and cycling support. It is concentrated, non-acidic, does not affect pH, and will not over-activate protein skimmers in saltwater systems. Complete Conditioner Benefits for Fresh and Saltwater Removes chlorine and chloramine from replacement water. Detoxifies ammonia, nitrite, and nitrate. Safe for freshwater and saltwater aquariums when used as directed. Useful during cycling to reduce ammonia and nitrite toxicity. Detoxifies heavy metals found in tap water at typical levels. Concentrated formula is efficient for regular aquarium maintenance. Seachem Prime Dechlorinator Details Product type: Complete aquarium water conditioner Primary use: Dechlorination and detoxification during water changes Suitable systems: Freshwater and saltwater aquariums Standard dose: 5 ml per 200 L (50 US gallons) of new water Emergency nitrite dose: Up to 5 times the normal dose when needed Package size: 250 ml Directions for Seachem Prime Use 1 capful or 5 ml for each 200 L (50 US gallons) of new water. Each cap thread is approximately 1 ml for smaller doses. Prime can be added directly to the aquarium, but it is best added to new water before filling. If adding directly to the aquarium, dose for the full aquarium volume. A sulfur odor is normal. A double dose may be used for exceptionally high chloramine concentrations. To detoxify nitrite in an emergency, up to 5 times normal dose may be used. If temperature is above 30°C (86°F) and chlorine or ammonia levels are low, use a half dose. What's Included 1 x Seachem Prime - 250 ml