API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 4-Ounce Bottle
$8.68
Price: $8.68
(as of Oct 12, 2025 02:05:27 UTC – Details)
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 are scientifically proven to quickly consume ammonia and nitrite to help prevent new tank syndrome. Allows immediate addition of fish to a new freshwater or saltwater aquarium. Use when starting a new aquarium, adding new fish, changing water, changing filter media, after medicating, or whenever ammonia or nitrite are detected. Allows instant addition of fish. Limits toxic ammonia and nitrite. Helps prevent fish loss. Immediately starts aquarium cycle. Contains live, nitrifying bacteria. No refrigeration required. All natural.
Is Discontinued By Manufacturer : No
Product Dimensions : 1.5 x 1.5 x 6 inches; 4.8 ounces
Manufacturer recommended age : 1 month and up
Item model number : 89C
Department : Unisex-Adult
Date First Available : January 14, 2012
Manufacturer : Mars Fishcare
ASIN : B006YG1ZLC
Best Sellers Rank: #4,707 in Pet Supplies (See Top 100 in Pet Supplies) #20 in Aquarium Water Treatments
Customer Reviews: 4.7 4.7 out of 5 stars 2,543 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Contains one (1) API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 4-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
Customers say
Customers find the bacteria treatment works well for their aquariums and is perfect for setting up new tanks, appreciating its value and measurement accuracy with markings on the cap. The water clarity and ammonia levels show mixed results – while some report crystal clear water, others experience ammonia levels that don’t go down, and some report high nitrite levels. The speed of action also receives mixed feedback, with some finding it faster while others note it’s not instant.
13 reviews for API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 4-Ounce Bottle
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$8.68
Nikole –
A Must-Have for New Tanks!
The API QUICK START works like a charm! I used it when setting up a new aquarium, and it helped cycle the tank quickly with no ammonia or nitrite spikes. Super easy to use, and safe for fishâmy water stayed clear and healthy. Highly recommend for both beginners and experienced fish keepers!
M.R –
Canât go wrong with this product
Love this product. I have had several betta tanks and this is my go to quick start. I have never had any issues wouldnât recommend for anyone looking to get into fish keeping. Easy instructions and fishes seem to thrive.
Rock Drummer24 –
Plenty of treatments for a year of aquarium care.
Great for small ponds and aquariums.
EP –
Love it!
Use this on all of my tanks, works great!
Zoe Baez –
Great product
My fish it’s healthy sns thriving
Elad –
Seems to be a quality product and not outrageous price, but does it work? Who knows? LOL!
I needed to do a MAJOR clean and overhaul of the primary water filter in my 75 gal tank. I was confident doing so would throw off the beneficial bacterias that filter the water and prevent toxic buildup of nitrates, etc. I read a number of reviews that recommended this product for when water changes were done, not just new tank setups. I can say that after thoroughly cleaning and replacing parts of the filtering system, changing water (25%), and applying this product per instructions on the bottle, my fish and plants showed zero stress and my chemical water parameters testing kit over 2 days showed perfect levels. So it must work, right?
David L. –
Product Does What It Promises
All my fish are doing wonderfully. This product promised that I can add fish as long as I use and add their product to my tank. Fish are doing wonderfully. Completely satisfied.
Lorna –
A must buy for new tanks
Has never steered me wrong. It DOES NOT REPLACE THE CYCLE, I REPEAT DOES NOT REPLACE THE NITROGEN CYCLE. It just helps it along.
Parviz –
Good
avinash gond –
Good product to start new tank
Debora Medeiros –
It’s Quickstart, it’s API. It’s not bad at all. It does what’s supposed to do. Just add it during big water changes (30%+) and you are golden. Good to buy you some time when treating ammonia too.
Vipin Varghese –
Good product, helped to bring down the nitrite level when setting up the tank
ottimo acquisto per selezione e qualità imballaggio buono le pietre sono arrivate tutte intatte niente schegge,solo da lavare.le consiglio per un allestire un acquario da 60cm.molto soddisfatto. –
ottimi prodotti un po’ più cari x l Europa e poco commercianti. pratico ed efficace.consiglo x cambi d acqua o avvii di vasche nuove.