CrowCrowCrow
CrowCrowCrow
Search products...
My Orders
Gold
Cart
  • Clearance
  • China Market
  • Coins
  • Brands
  • Become a Partner

Looking for an imported product?

We can arrange it. Send the name or a store link on WhatsApp — we'll check if we can source it and quote the all-in India price.

WhatsApp Us
CrowCrowCrow

Free Shipping

Standard delivery, all India

Secure Packaging

Factory-sealed, damage-safe

About

  • About CrowCrowCrow
  • How It Works
  • Careers
  • Press & Media
  • Sustainability
  • Blog & Guides
  • Why Choose CrowCrowCrow

Buyer Help

  • Contact Us
  • Track Order
  • Customs & Duties
  • Size Guide
  • Payment Options
  • FAQs
  • Buyer Protection

Our Policies

  • Privacy Policy
  • Shipping Policy
  • Terms and Condition
  • Return and Refunds Policy
  • Cancellation Policy

Programs & B2B

  • Clearance Sale
  • Rewards ProgramSoon
  • Refer a FriendSoon
  • Student DiscountSoon
  • Affiliate ProgramJoin
  • CCC Membership
  • Wholesale & B2B
  • Corporate Gifting
  • Free Tools
  • Price Match

Connect With Us

Payment Methods

Visa
Mastercard
RuPay
Amex
UPI
Google Pay
PhonePe
Paytm

Shipping Partners

BluedartDelhiveryExpressBoxIndia Post
Cookie Policy··Disclaimer·DMCA·MCP for AI·Authenticity·Money-Back·Security

© 2026 Color Papers India Private Limited

Help us give you a better experience. We use cookies to remember your cart, speed up checkout, and show you authentic US products worth importing. You stay in control — your data is handled per India's DPDP Act 2023. Cookie Policy

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 Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater

API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹470₹650

You save ₹180 (28%)

Qty
API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater — Multi-colored / 1 fl oz
Multi-colored / 1 fl oz
₹470
₹650
In Stock
API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater — Blues & Purples / 4 fl oz
Blues & Purples / 4 fl oz
₹980
₹1,400
In Stock
API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater — multi natural / 16 fl oz
multi natural / 16 fl oz
₹2,590
₹3,840
In Stock

Estimated doorstep delivery by 20 Nov - 22 Nov from USA

Add on Google

Tested and Trusted · Always Original & 100% Imported

View trust tables•Know about trust badges
Sourced from US retailers
Sourced from US retailers
Factory-Sealed
Factory-Sealed
All Duties Included
All Duties Included
ExpressBox Tracked
ExpressBox Tracked
Secure Payments
14-Day Smile Guarantee
14-Day Smile Guarantee
USA-Sourced

Support Biological Filtration at a Great Price

About this item

API Stress Zyme is a liquid biological treatment designed for both freshwater and saltwater aquariums. It contains over 300 million live beneficial bacteria per teaspoon, aiding in the breakdown of organic waste and supporting a healthy aquatic environment. This product helps develop and maintain an active biological filter, reducing sludge buildup and preventing ammonia and nitrite spikes. Suitable for use during setup and ongoing maintenance, it ensures cleaner water and healthier fish. Easy to use weekly, it requires no refrigeration and is compatible with all aquarium types. Imported directly from USA, it arrives in 11-13 days with all duties paid, ensuring a reliable, factory-sealed solution for Indian aquarists.

Reviewers report that regular use of API Stress Zyme keeps gravel and decorations clean, reduces water changes, and supports fish health in both freshwater and saltwater tanks. Its beneficial bacteria help sustain water quality, especially in heavily stocked or organic-rich aquariums. Ideal for hobbyists seeking a simple, effective biological supplement, it is a trusted USA-imported product available through crowcrowcrow, with fast delivery and duties included.

Key Features

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

Formulated with Live Beneficial Bacteria

API Stress Zyme contains over 300 million live bacteria per teaspoon, actively breaking down organic waste and supporting biological filtration. This formulation outperforms generic products by ensuring a high concentration of active microbes, backed by decades of aquarium science. It helps maintain a stable, healthy environment for fish and invertebrates, reducing ammonia and nitrite levels naturally.

Ideal for Both Fresh & Saltwater Aquariums

Designed for versatility, API Stress Zyme supports freshwater and saltwater tanks, making it suitable for hobbyists with diverse setups. Use it during initial setup or weekly maintenance to sustain water quality. Skip it if your tank has specific chemical treatments or if you prefer dry bacterial supplements; this liquid solution is best for biological support.

How to use

  • Shake Well — Ensure the bottle is well mixed before use. Add 1 teaspoon per 10 gallons of water weekly for ongoing maintenance.
  • Add to Aquarium — Pour the measured dose directly into the aquarium water, preferably near a filter outlet for even distribution.
  • Maintain Weekly — Repeat weekly to sustain beneficial bacteria levels, especially after water changes or cleaning.

Example scenarios

Typical situations where API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

Ravi from Mumbai maintains a 50-gallon freshwater tank, struggles with organic sludge buildup, and needs a reliable biological supplement.

How this product helps

API Stress Zyme supports biological filtration, reduces cleaning frequency, and improves water clarity. One bottle lasts over 6 months, delivered in 11-13 days.

Specifications

Composition

Live Beneficial BacteriaOver 300 million per teaspoon

Usage

Serving Size1 tsp (5 ml) per 10 gallons weekly
Cost per use₹470 per teaspoon
Shelf life (unopened)1825 days (5 years)
Reapplication math1 tsp treats 10 gallons weekly; 1 bottle lasts ~200 days
ContraindicationsNone
Allergens / irritantsNone

How we compare

FeatureAPI Stress ZymeOthers
Active Beneficial BacteriaOver 300 million bacteria per teaspoon, supporting biological filtrationVaries by brand; typically fewer beneficial microbes, less effective
Water CompatibilitySupports freshwater and saltwater aquariumsMost local products are limited to freshwater or saltwater only
Shelf Life5 years (1825 days) unopenedShelf life varies; often shorter due to storage conditions
Delivery & AuthenticityArrives via ExpressBox, duties paid, factory-sealedLocal brands available at retail stores, variable quality

Product details

SKUbdc8932
GTIN00317163010563
BrandAPI
Size1 fl oz (29.57 ml)
ColorMulti-colored
MaterialPlastic
Pet Typefish

About API

API has been a trusted name in aquarium care for decades, known for quality water treatments and biological solutions.

Compliance & Legal

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

Customer Reviews

Share your experience

Bought this from CrowCrowCrow? Other buyers want to hear how it went.

No reviews from buyers in India yet. Be the first to share your experience!

FAQ, See What Others Asked

Is API Stress Zyme safe for saltwater aquariums?
Yes, API Stress Zyme is formulated for both freshwater and saltwater tanks. It contains beneficial bacteria that aid biological filtration without harming aquatic life. Use weekly as directed for optimal water quality and fish health.
How often should I add API Stress Zyme?
Add 1 teaspoon per 10 gallons of water weekly. For new aquariums, double the dose at start-up and for 2 additional weeks to boost biological filter development.
Can I use API Stress Zyme in a heavily stocked tank?
Yes, regular use helps manage organic waste in heavily stocked tanks, supporting a stable environment. Ensure proper dosing based on tank size for best results.
Does API Stress Zyme reduce maintenance?
Yes, it breaks down sludge and organic compounds, reducing the frequency of cleaning and water changes, and promoting a healthier aquarium.
How does API Stress Zyme arrive in India?
CrowCrowCrow ships this product via ExpressBox, with all duties paid, arriving in 11-13 days. It is factory-sealed and imported directly from USA for reliable quality.

Frequently bought together

API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater

This item:

API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater

₹470

API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater

This item

API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater

₹470

Total price:

₹9,130

You save ₹2,920 (24%) Extra

3 items selected

3 items

₹9,130

You save ₹2,920 (24%) Extra

Product Comparison

Attributes
Current
API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & Saltwater
API Stress Zyme Aquarium Water Treatment 1 fl oz | Biological Filter Support in Fresh & SaltwaterBuy Now
Seachem Prime & StressGuard Aquarium Water Conditioners 250ml + 500ml | Essential for Indian Aquariums
Seachem Prime & StressGuard Aquarium Water Conditioners 250ml + 500ml | Essential for Indian AquariumsBuy Now
Get Joy Freeze Dried 100% Beef Kidney Dog Treats, 4oz | Single Ingredient Organ Meat, High Protein Raw Dog Food Topper, Snack & Training Rewards | Grain Free, Gluten Free, Filler Free
Get Joy Freeze Dried 100% Beef Kidney Dog Treats, 4oz | Single Ingredient Organ Meat, High Protein Raw Dog Food Topper, Snack & Training Rewards | Grain Free, Gluten Free, Filler FreeBuy Now
NACOCO Dog Dinosaur Costume Green Size M | Playful Halloween Pet Clothes (70-120 chars)
NACOCO Dog Dinosaur Costume Green Size M | Playful Halloween Pet Clothes (70-120 chars)Buy Now
Farnam Red Cell Liquid - 32 oz | Supports Blood Circulation & Coat Shine in Horses
Farnam Red Cell Liquid - 32 oz | Supports Blood Circulation & Coat Shine in HorsesBuy Now
Jack&Pup Collagen Sticks for Dogs 15 Count | Long Lasting Beef Collagen Chews for Large Dogs
Jack&Pup Collagen Sticks for Dogs 15 Count | Long Lasting Beef Collagen Chews for Large DogsBuy Now
Sergeant’s Fur-So-Fresh Oatmeal Dog Shampoo 18 oz | Moisturizes & Deep Cleans for Sensitive Skin
Sergeant’s Fur-So-Fresh Oatmeal Dog Shampoo 18 oz | Moisturizes & Deep Cleans for Sensitive SkinBuy Now
Spec
Price
₹470
₹650
₹5,080
₹7,180
₹3,580
₹4,220
₹3,140
₹4,410
₹4,260
₹8,920
₹5,630
₹8,590
₹2,190
₹3,310
Brand NameAPISeachemGet JoyNACOCOFarnamJack&PupSERGEANT'S
Item FormLiquidN/AN/AN/AN/AN/AN/A
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹470₹650

You Save ₹180

Estimated doorstep delivery by 20 Nov - 22 Nov from USA
Add on Google
Visa
Mastercard
Google Pay
UPI
15-Point QC Passed
😊14-Day Smile Guarantee

Fast Shipping

Secure Packaging

14-Day Returns*

Quality & authenticity

Security & Privacy

Safe payments
Secure privacy

Tracked delivery

Tracked from USA · duties included
Genuine USA Imported Product
Damaged? Covered*

*Genuine defect, damage, wrong item or non-delivery, reported within 14 days; refund after inspection. Conditions

Your Order Journey: From Purchase to Doorstep

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
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

Why shop with us

Crowcrowcrow: The Only Safe Lane for US-Market Exclusives

One price. One payment. No surprises.

High risk

Buying Direct

Recommended

Crowcrowcrow

Safe Lane

vs
₹1,410+ (3× the price)
₹470 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