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Aquarium Water Treatments
  1. Home
  2. Pet Supplies
  3. Fish & Aquatic Pets
  4. Aquarium Accessories
  5. Water Quality Testing & Treatment
  6. Aquarium Water Treatments
  7. API STRESS ZYME…
API

API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks

API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹8,480₹12,420

You save ₹3,940 (32%)

Qty
API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks — Blues & Purples / 4 fl oz
Blues & Purples / 4 fl oz
₹980
₹1,400
In Stock
API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks — multi natural / 16 fl oz
multi natural / 16 fl oz
₹2,590
₹3,840
In Stock
API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks — 64 fl oz
64 fl oz
₹8,480
₹12,420
In Stock

Estimated doorstep delivery by 20 Nov - 22 Nov from USA

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Support a Natural, Healthy Aquarium Environment

About this item

API STRESS ZYME is a liquid biological treatment designed for freshwater and saltwater aquariums. It contains over 300 million live beneficial bacteria per teaspoon, which consume sludge, uneaten food, and organic waste, helping to maintain water clarity and quality. Regular use supports a strong biological filter, reduces aquarium maintenance, and promotes a healthy environment for tropical fish, cichlids, goldfish, and reef species. API has over 50 years of experience creating innovative aquarium solutions, ensuring compatibility with other API products for algae control, disease management, and water quality.

API STRESS ZYME naturally boosts the aquarium cycle, making it easier to keep tanks clean without harsh chemicals. It works effectively in both freshwater and saltwater setups, including reef tanks, by supporting beneficial bacteria growth and organic waste breakdown. Many users report clearer water, less frequent cleaning, and healthier fish. It is factory-sealed, supports a safe environment, and is suitable for use in Indian aquariums with local tap water, which often contains chlorine or chloramine that should be neutralized before use.

Imported directly from the USA, API STRESS ZYME arrives with all duties paid, ensuring hassle-free delivery in 11-13 days. Use weekly for ongoing maintenance or at start-up to boost biological filtration. A 64 fl oz bottle provides long-lasting support for tanks up to 100 gallons, making it a cost-effective choice for hobbyists seeking a natural, bacteria-based solution.

Key Features

  • Contains one (1) API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-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

Why choose this product

Formulation with Over 300 Million Live Bacteria

API STRESS ZYME contains a potent blend of beneficial bacteria that naturally consume organic waste, supporting a balanced, clear water environment. Its research-backed formula outperforms generic treatments by boosting the aquarium's natural cycle, reducing algae and foul odors, and supporting fish health.

Ideal for Hobbyists & Professional Aquarists in India

Designed for use in Indian tap water, which often contains chlorine or chloramine, API STRESS ZYME helps establish and maintain a healthy biological filter. It is factory-sealed, imported from the USA, and arrives with duties paid, ensuring authenticity and quality for your freshwater or saltwater tank. Skip frequent scrubbing and enjoy a vibrant, thriving aquatic environment.

How to use

  • Measure & Shake — Shake the bottle well before use. Measure 5 ml per 10 gallons (38 L) of aquarium water.
  • Add & Distribute — Pour the dose evenly into the aquarium, preferably during routine water changes or at feeding time.
  • Repeat Weekly — Use once a week to support biological filtration. For new tanks, double the dose for the first 2 weeks.

How Indians use this product

  • Ravi from Mumbai has a 50-gallon freshwater tank with frequent algae issues. Using API STRESS ZYME weekly, he reports clearer water and less cleaning in 2 months, saving costs on replacements.
  • Anjali in Bangalore maintains a reef tank. She uses API STRESS ZYME to boost beneficial bacteria, supporting coral health and reducing organic buildup, with visible water clarity in 4 weeks.

Specifications

Composition

Beneficial Bacteria CountOver 300 million per teaspoon

Usage

Serving Size5 ml per 10 gallons (38 L) weekly
Cost per use₹848 per gallon
Shelf life (unopened)Supports up to 1825 days (5 years) unopened
Reapplication mathA 64 fl oz bottle lasts approximately 12 months in a 100-gallon tank with weekly dosing
Who should avoidNone, suitable for all freshwater and saltwater tanks
Common irritantsNone

How we compare

FeatureAPI STRESS ZYMEOthers
Bacterial CountOver 300 million beneficial bacteria per teaspoon, supporting natural waste breakdownVaries; often chemical-based, with no live bacteria content
Water CompatibilitySupports freshwater and saltwater aquariums, including reef tanksMostly freshwater or saltwater-specific, limited cross-compatibility
Shelf LifeSupports up to 5 years unopened, use within months after openingTypically shorter shelf life, less bacterial viability
Water Quality SupportReduces ammonia, nitrite, and sludge naturallyChemical additives with limited biological support

Product details

SKUwqd3047
GTIN00317163100561
BrandAPI
Size64 fl oz (1.89L)
ColorNo Color
MaterialPlastic
Pet Typefish

About API

API has over 50 years of creating innovative aquarium solutions, trusted worldwide for water treatment and fish health products.

Compliance & Legal

This is a dietary supplement; not intended to diagnose, treat, cure or prevent any disease.

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FAQ, See What Others Asked

Is aquarium water treatment safe for all fish species?
Yes, API STRESS ZYME is a natural bacteria-based solution designed to support a healthy environment for a wide range of freshwater and saltwater fish, including tropicals, cichlids, and reef species. It contains beneficial bacteria that aid in organic waste breakdown, reducing harmful water conditions without chemicals or toxins.
How often should I use API STRESS ZYME in my aquarium?
Use weekly at a dose of 5 ml per 10 gallons (38 L) of water. For new tanks or biological filter boosting, double the dose for the first 2 weeks. Regular use helps maintain water clarity and fish health.
Can I use API STRESS ZYME with tap water in India?
Yes, but ensure to neutralize chlorine or chloramine in tap water before adding to the tank. API STRESS ZYME supports biological filtration, helping to establish a balanced environment even with local tap water quality.
What is the shelf life of API STRESS ZYME?
Unopened, it supports up to 5 years from manufacture. Once opened, use within the period shown on the bottle for optimal bacterial activity. Factory-sealed for freshness and quality.
How does API STRESS ZYME compare to local Indian water treatments?
API STRESS ZYME contains proven beneficial bacteria from the USA, supporting a natural, balanced aquarium cycle. It reduces maintenance and improves water quality more effectively than many local chemical treatments.
How do I buy authentic API aquarium products in India?
Purchase from authorized US retailers and brand partners through crowcrowcrow. All products are factory-sealed, imported per order, with all duties and GST included, arriving in 11-13 days via tracked ExpressBox.

Frequently bought together

API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks

This item:

API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks

₹8,480

API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks

This item

API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks

₹8,480

Total price:

₹20,520

You save ₹8,280 (29%) Extra

3 items selected

3 items

₹20,520

You save ₹8,280 (29%) Extra

Product Comparison

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API STRESS ZYME Aquarium Cleaning Solution 64 fl oz | Natural Organic Bacteria for Freshwater & Saltwater Tanks
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Spec
Price
₹8,480
₹12,420
₹5,080
₹7,180
₹6,960
₹9,200
₹7,070
₹9,350
₹18,270
₹28,630
₹3,650
₹5,810
₹6,770
₹10,100
Brand NameAPISeachemReptile SystemsFeedooFrontlineStrongheartOster
Item FormLiquidN/AN/AN/AN/AN/AN/A
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹8,480₹12,420

You Save ₹3,940

Estimated doorstep delivery by 20 Nov - 22 Nov from USA
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Your Order Journey: From Purchase to Doorstep

You Order
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Packed & shipped
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Fast transit
Consignment to India Warehouse
Customs cleared
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You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you

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vs
₹25,440+ (3× the price)
₹8,480 locked, all-in
Hard to get the original US version in India
Original US version, shipped to your door
Extra pay for Import Duties, GST, and forex fees
One price in INR, no customs charges at delivery
4–12 weeks · No tracking
11-13 days · live tracking
Grey market, no guarantee, no protection, no refund
Sourced from US retailers, India-verified, return available
Lost in transit = ₹0 back
Full protection included