API Quick Start Aquarium Nitrifying Bacteria, 32 oz for Freshwater & Saltwater Tanks

API Quick Start is a 32 oz (946 mL) bottle of live nitrifying bacteria for starting freshwater or saltwater aquariums and helping maintain biological filtration.

• Live, patented nitrifying bacteria — consumes ammonia and nitrite, compounds that can harm fish.
• For new freshwater and saltwater aquariums — starts the aquarium cycle so fish can be added immediately.
• For established tanks, too — helps maintain an active biological filter and healthy water conditions.
• Use when starting a tank, adding fish, or changing water or filter media — supports routine aquarium care.
• 32 oz (946 mL) bottle — provides a larger-format supply of aquarium bacteria treatment.

Ammonia and nitrite can build up from fish waste in a new aquarium, creating conditions associated with fish loss and new tank syndrome. API Quick Start is made to help manage these compounds as the tank cycle begins, and to support biological filtration in an established aquarium. It is intended for freshwater and saltwater aquarium use, giving fishkeepers a bacteria treatment for both tank types.

How does API Quick Start help when starting an aquarium?

Its live nitrifying bacteria consume ammonia and nitrite as the aquarium cycle starts. API reports the bacteria are scientifically proven to do this, and the product allows immediate fish addition when starting a new aquarium.

• Ammonia and nitrite can accumulate from fish waste.
• The bacteria begin working on these compounds as the tank cycle starts.
• Routine use reduces compounds that are harmful to fish.

When should I use API Quick Start?

Use API Quick Start when setting up a new aquarium, adding new live fish, or changing water or filter media. In an established aquarium, it also helps maintain an active biological filter, supporting healthy water conditions as part of ongoing tank care.

• For new aquarium setup.
• When introducing new live fish.
• During water or filter media changes.

Which aquariums and fish is API Quick Start for?

API Quick Start is made for freshwater and saltwater aquariums. API aquarium care products are designed for fish including tropical community fish, cichlids, and goldfish; use this bacteria treatment as directed for your aquarium.

• Freshwater aquarium use.
• Saltwater aquarium use.
• Designed for use in fish tanks.

API Quick Start suits fishkeepers setting up a new aquarium, adding fish, or maintaining biological filtration in an established tank. Follow the product directions when using it. Its live nitrifying bacteria and freshwater-and-saltwater use make it a practical fit for supporting aquarium cycling and routine filter care.