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API Quick Start


4 in stock


API® QUICK START nitrifying bacteria allows for the instant addition of fish, as it immediately starts the natural aquarium cycle with beneficial bacteria, which converts toxic ammonia into nitrite, then into harmless nitrate to help prevent fish loss in your tank.

Best for use when starting a new aquarium, after water changes and filter changes, and when adding new fish to an existing aquarium.

API QUICK START nitrifying bacteria may be used in both fresh and saltwater aquariums.


Add 10 ml per 10 gallons of aquarium water.

For saltwater aquariums, double the dose.



  • Can I add fish immediately after adding API QUICK START™ nitrifying bacteria to my tank?

Yes, you may add your fish to your aquarium immediately after dosing with API QUICK START nitrifying bacteria.

  • Is API QUICK START™ nitrifying bacteria safe for soft coral?

Yes, API QUICK START nitrifying bacteria is safe for Soft Coral.