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Product Information API Marine Quick Start 473 ml – Live nitrifying bacteria for marine and reef aquariums that rapidly establishes the biological filter, helps reduce toxic ammonia and nitrite, supports the natural nitrogen cycle, and allows faster aquarium startup. Safe for marine fish, live rock, corals, and invertebrates. Ideal for new aquariums, water changes, filter maintenance, and after medication. Made in the USA. Rapidly Establish a Healthy Biological Filter in Marine & Reef Aquariums Every new saltwater aquarium goes through a biological cycling process before it becomes stable enough to support marine life. During this period, toxic ammonia and nitrite can quickly accumulate, placing expensive marine fish and corals at risk. API Marine Quick Start contains patented live nitrifying bacteria that immediately begin colonizing your biological filter. These bacteria convert harmful ammonia into nitrite and then nitrate, helping establish the natural nitrogen cycle and reducing the risk of new tank syndrome. It is suitable for: New marine aquariums Reef aquariums Fish Only With Live Rock (FOWLR) systems Adding new fish Introducing live rock or corals After water changes After replacing filter media After medication Unlike maintenance bacteria products, Marine Quick Start is specifically designed to help establish and reinforce the biological filter. Why Marine Hobbyists Choose API Marine Quick Start Live patented nitrifying bacteria Helps establish the biological filter quickly Reduces toxic ammonia and nitrite Supports the natural nitrogen cycle Helps prevent new tank syndrome Reef safe Safe for marine fish, corals and invertebrates No refrigeration required Ideal after medication or filter maintenance Made in USA Key Benefits Accelerates biological filtration Helps reduce fish losses caused by ammonia spikes Supports faster aquarium startup Helps stabilize new reef aquariums Reinforces beneficial bacteria after maintenance Safe with live rock and biological media Suitable for fish-only and reef systems Dosage Marine Aquariums Add 20 ml per 38 litres (10 US gallons) of aquarium water. Shake well before use. Use when starting a new aquarium, after water changes, replacing filter media, adding fish, introducing live rock or corals, after medication, or whenever ammonia or nitrite is detected. Suitable For Reef Aquariums Fish Only Marine Tanks FOWLR Systems Live Rock Systems Nano Reefs SPS Reefs LPS Reefs Soft Coral Aquariums Marine Quarantine Systems Expert Recommendation from Something Fishy Marine Quick Start helps establish beneficial bacteria, but it does not eliminate the need to monitor water quality. Every new marine aquarium should still be tested regularly for ammonia, nitrite, nitrate and pH before adding sensitive livestock. For the safest results, pair Marine Quick Start with the API Saltwater Master Test Kit and introduce livestock gradually rather than fully stocking the aquarium at once.