Seachem Prime - 500 mL Seachem Prime - 500 mL is a concentrated aquarium water conditioner for freshwater and saltwater systems, removing chlorine and chloramine while detoxifying ammonia, nitrite, and nitrate. Seachem Prime for Aquarium Water Changes Prime is designed for new aquarium setup, routine water changes, cycling support, livestock transport, and emergency detoxification. It is non-acidic, will not impact pH, and will not over-activate protein skimmers in marine aquariums. Complete Conditioner Benefits for Freshwater and Saltwater Removes chlorine and chloramine from tap water. Detoxifies ammonia, nitrite, and nitrate. Suitable for freshwater and saltwater aquariums. Can be used during cycling to reduce ammonia and nitrite toxicity. Detoxifies heavy metals found in tap water at typical concentration levels. Highly concentrated formula is efficient for routine aquarium maintenance. Seachem Prime Dechlorinator Details Product type: Complete aquarium water conditioner Primary use: Tap water conditioning and toxin detoxification Suitable systems: Freshwater and saltwater aquariums Standard dose: 5 ml per 200 L (50 US gallons) of new water Small-dose reference: Each cap thread is approximately 1 ml Package size: 500 ml Directions for Seachem Prime Use 1 capful or 5 ml for each 200 L (50 US gallons) of new water. For smaller volumes, each cap thread is approximately 1 ml. Prime may be added directly to the aquarium, but it is better to add it to new water first. If adding directly to the aquarium, dose based on total aquarium volume. A sulfur odor is normal. For exceptionally high chloramine concentrations, a double dose may be used safely. To detoxify nitrite in an emergency, up to 5 times the 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 - 500 ml