Search  for anything...
API

API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle

  • Based on 11,858 reviews
Condition: New
Checking for the best price...
$16.18 Why this price?
Save $25.31 was $41.49

Buy Now, Pay Later

As low as $4 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – 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, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. 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

FREE 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 Wednesday, Aug 26
Order within 5 hours and 15 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Color: multi natural


Size: 16 oz


Features

  • Contains one (1) API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle
  • Keeps freshwater and saltwater aquariums clean and reduces maintenance
  • Consumes sludge to help keep gravel and decorations clean
  • Adds beneficial bacteria for a healthy aquarium
  • Use weekly to maintain a clean, healthy aquarium

Description

Reduce aquarium maintenance by creating a naturally balanced aquarium with API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution. Fish waste, sludge, uneaten food and other organic compounds can cause harmful water conditions including ammonia and nitrite poisoning and breathing difficulty. They can also be difficult and time-consuming to remove especially from rock, coral and gravel. API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution contains over 300 million live bacteria per teaspoonful to consume sludge and organic debris, keeping gravel and glass clean naturally and boosting the natural aquarium cycle, reducing aquarium maintenance over time. Use it weekly in freshwater and saltwater aquariums to maintain a strong biological filter and a healthy, clean aquarium. With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

Brand: API


Liquid Volume: 473 Milliliters


Item Weight: 544.31 Grams


Item Form: Liquid


Number of Packs: 1


Is Discontinued By Manufacturer ‏ : β€Ž Yes


Product Dimensions ‏ : β€Ž 10 x 10 x 10 inches; 1.2 Pounds


Item model number ‏ : β€Ž 56E


Department ‏ : β€Ž Unisex-Adult


Date First Available ‏ : β€Ž June 20, 2004


Manufacturer ‏ : β€Ž Mars Fishcare


Best Sellers Rank: #4,670 in Pet Supplies (See Top 100 in Pet Supplies) #19 in Aquarium Water Treatments


#19 in Aquarium Water Treatments:


Customer Reviews: 4.8 4.8 out of 5 stars (12,133)


Brand Name: API


Manufacturer: Mars Fishcare


UPC: 317163160565


Global Trade Identification Number: 65


Model Number: 56E


Manufacturer Part Number: 56E


Unit Count: 1 Count


Item Type Name: Aquarium Sludge Remover


Liquid Volume: 473 Milliliters


Item Weight: 544.31 Grams


Item Form: Liquid


Target Species: Fish


Allergen Information: Apple Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • My tanks have improved with this
Size: 16 oz Style: Freshwater
I have to be honest and my tanks have cycled and been more stable since their 2nd dose of this product. I use it weekly the first month, then once a month with my water changes. This product looks like it has helped my water settle and allowed my plants to grow faster too. I'm honestly impressed at how bacteria works.... if you guys want to know that you're getting the real deal, do this. Take off the blue cap and put a couple of drops of this liquid in it. Close your bottle and let the cap dry up for a day. When you come back, there will be colonies of white matter built up which is the bacteria.... LIVE BACTERIA !!! amazing ... show more
Reviewed in the United States πŸ‡ΊπŸ‡Έ on February 15, 2023 by Alan G.
    • Keeps healthy
Size: 16 oz Style: Freshwater
Seems to work and keep aquarium healthy.
Reviewed in the United States πŸ‡ΊπŸ‡Έ on March 11, 2023 by KT
    • HELPS BALANCE TANK.
Size: 16 oz Style: Freshwater
HAVE USED THIS FOR YEARS TO START MY TANKS AND KEEPING THE BALANCED. SEEMS TO WORK WELL IF YOU HAVE THE RIGHT FILTER SYSTEM BIG TOM.
Reviewed in the United States πŸ‡ΊπŸ‡Έ on February 21, 2023 by BIG TOM
    • IT WORKS!!
Size: 16 oz Style: Freshwater
It works! I have a divided 10 gallon betta tank. I fought with my tank for months to get my ammonia down below .25, used different products and after 1 dose and 2 weeks later my ammonia was at 0. I will continue to use this with every water change.
Reviewed in the United States πŸ‡ΊπŸ‡Έ on February 3, 2023 by C.Harleyquinn
    • Works great every time...
Size: 4 oz Style: Freshwater
I have purchased this product many times, and it works great every time. Helps keep my aquarium clean and healthy
Reviewed in the United States πŸ‡ΊπŸ‡Έ on January 4, 2023 by Garry
    • Stress zyme
Size: 16 oz Style: Freshwater
Works as described. I add to my tank after water changes and when I add new fish to my tank.
Reviewed in the United States πŸ‡ΊπŸ‡Έ on December 25, 2022 by Jimmy R.
    • Always repurchase
Size: 64 oz Style: Freshwater
All of my aquarium products are API brand. The product is great, I bought the largest size which is the best value.
Reviewed in the United States πŸ‡ΊπŸ‡Έ on December 13, 2022 by Neil
    • Great product and reliably works!
Size: 16 oz Style: Freshwater
Have used Stress Zyme for many, many years now in my tanks. It really does work. Some know-it-alls, claiming with their PHd's, ect. on fish forums, that this is bogus, that there is no live culture bacteria and can't work, that living bacteria cannot be kept alive in a bottle of liquid. Hogwash. Their medicine they take, such as liquid penicillin... is exactly that. Live bacteria in liquid form. In a bottle. Also that penicillin, the fact that it works, proves THIS bacteria also CAN and does work. The over edumacated people need to get educated on their facts and get them straight. Good bacteria culture NEEDS adding to your tanks to make them more like a good natural made spring fed lake or pond system has, good bacteria that 'mother nature' naturally adds. I have an irridescent shark in my tank, have had him/her since 1997. He/she is still healthy, never had any illness that needed treating. Even when I had other fish in the tank with it, this Stress Zyme cultures kept down the smell that a normal tank normally has. I can open the lid and sniff and virtually smell nothing. If I run out, and not use any for a while, the smell comes back, builds up. Start adding Stress Zyme again and the smell goes away. Fish are more alert and calmer with this added. Irridescents are very skittish and splashy fish. If they are calm, and if there is no smell to your tank when using this, then that means this stuff is working. 2 thumbs up. ... show more
Reviewed in the United States πŸ‡ΊπŸ‡Έ on September 25, 2019 by ValSG

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...