Search  for anything...
API

API Freshwater and Saltwater Aquarium Nitrifying Bacteria 32-Ounce Bottle - Instant addition of fish, Reduces harmful compounds, Prevents fish loss

  • Based on 669 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $6 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Sep 21
Order within 3 hours and 11 minutes
Available payment plans shown during checkout

Size: 32-Ounce


Style: Freshwater


Features

  • Contains one (1) API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 32-Ounce Bottle
  • Allows instant addition of fish when starting a new aquarium
  • Reduces compounds harmful to fish when used routinely
  • Helps prevent fish loss in freshwater and saltwater aquariums
  • Use when starting a new aquarium, when adding new fish and when changing water and filter media

Description

In a new aquarium, harmful ammonia and nitrite build up from fish waste, often resulting in fish loss or “new tank syndrome”. The unique, patented nitrifying bacteria in API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria are scientifically proven to quickly consume ammonia and nitrite to help prevent fish loss. API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria allows immediate addition of fish to a new freshwater or saltwater aquarium as it immediately starts the aquarium cycle. This treatment also helps to maintain an active biological filter in an established aquarium for healthy water conditions. API QUICK START contains live, nitrifying bacteria. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.

Brand: API


Liquid Volume: 32 Fluid Ounces


Item Weight: 1 Pounds


Item Form: Liquid


Target Species: Fish


Product Dimensions ‏ : ‎ 14.3 x 10.4 x 7.6 inches; 1.03 Pounds


Item model number ‏ : ‎ 89Q


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ March 11, 2018


Manufacturer ‏ : ‎ Mars Fishcare


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #18,677 in Pet Supplies (See Top 100 in Pet Supplies) #165 in Aquarium Water Treatments


#165 in Aquarium Water Treatments:


Customer Reviews: 4.7 4.7 out of 5 stars 669 ratings


Item Weight: 1.03 pounds


Department: Unisex-Adult


Manufacturer: Mars Fishcare


Country of Origin: USA


Item model number: 89Q


Date First Available: March 11, 2018


Item Package Dimensions L x W x H: 7.44 x 5.16 x 2.24 inches


Item Dimensions LxWxH: 14.3 x 10.4 x 7.6 inches


Item Weight: 1 Pounds


Brand Name: API


Target Audience Keyword: fish


Directions: Use when starting an aquarium, adding fish, changing water or filter media, after medicating, or when ammonia or nitrite are detected. Shake well, then add 2 tsp. (10 ml) per 10 gallons (38 L) of water. For saltwater aquariums, double the dose. Store in a cool, dry place.


Country of Origin: United States


Model Name: QUICK START 32OZ


Color: multi natural


Size: 32-Ounce


Material: Plastic


Style: Freshwater


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Love it…. Works very well.
This is the only product I use when setting up new aquariums or doing water changes. Provides everything needed to make water safe for fish.
Reviewed in the United States on July 14, 2024 by Mr. Harris

  • Love it
Love that I can add fish to my aquarium with this!
Reviewed in the United States on January 18, 2024 by Bridgette Singletary

  • Essential
This is a must for keeping freshwater aquariums.
Reviewed in the United States on December 15, 2023 by Gabe C B

  • Love quick start
Bottle came in nice and undamaged. Just wish they had a gallon one.
Reviewed in the United States on October 18, 2023 by Stacy

  • Fish
Cleared water
Reviewed in the United States on May 31, 2024 by Margaret Spielman

  • A+++++
A+++++
Reviewed in the United States on September 3, 2023 by Mark

  • Use in Koi pond
Be careful as ammonia can bond to this and become ammonium, which still gives you high readings
Reviewed in the United States on June 20, 2020 by Amazon Customer

  • Works well..
I could find a large size on Amazon.
Reviewed in the United States on February 17, 2021 by Alice Benson

Can't find a product?

Find it on Amazon first, then paste the link below.