Do you want the ULTIMATE Water Conditioner for your aquarium? You will never find anything better out there than Seachem Prime - The most trusted and used Water Conditioner in the Aquatic World. *Hey! Want to protect Rhino from Poaching? Seachem will donate a portion of the profits for every bottle sold to a Rhin Preservation in South Africa. In return, you will get 30% more liquid with this Prime Rhino edition! Nearly all pet aquatics companies manufacture a product that removes chlorine. None of those, however, can compare in quality, concentration, or effectiveness to Seachem’s flagship product: Prime®. Prime® is the complete and concentrated conditioner for both fresh and saltwater. Prime® removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. It is non-acidic and will not impact pH. A further bonus for the reef hobbyist—Prime® will not over-activate skimmers. Prime® IS UP TO 5X MORE CONCENTRATED THAN COMPETING PRODUCTS IN THE MARKET! - Complete and Concentrated Conditioner for both fresh and saltwater - Removes Chlorine, Chloramine (Yes! It is an Anti Chlorine Water Conditioner) - Detoxifies Ammonia, Nitrite, Nitrate - Promotes and Regeneration of the Natural Slime Coat - Non-acidic and will not impact pH Prime® may be used during tank cycling to alleviate ammonia/nitrite toxicity. It contains a binder which renders ammonia, nitrite, and nitrate non-toxic, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals found in the tap water at typical concentration levels. Use at start-up and whenever adding or replacing water. When transporting or quarantining fish, use Seachem StressGuard™. When adding new fish, use Stability®. Both are ideal for use with Prime®. DIRECTIONS Use 1 capful (5 mL) for each 200 L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 1 mL. May be added to aquarium directly, but better if added to new water first. If adding directly to aquarium, base dose on aquarium volume. 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 normal dose may be used. If temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose. DOES PRIME REMOVE AMMONIA, NITRITE, NITRATE? Prime® does not remove ammonia, nitrite, or nitrate from the system. It simply binds with those compounds making them harmless to the inhabitants and still bioavailable to the beneficial bacteria. DOES PRIME EXPIRE? No, as long as Prime® has been stored properly, it will last indefinitely.