







🧬 Transform your tank into a thriving aquatic masterpiece—clean, clear, and effortlessly vibrant!
API STRESS ZYME is a 473 ml liquid solution packed with over 300 million live bacteria per teaspoon that naturally consumes sludge and organic debris in both freshwater and saltwater aquariums. Designed for weekly use, it boosts the biological filter, reduces maintenance, and promotes a healthy, balanced aquatic environment. Trusted for over 50 years, API’s formula supports cleaner gravel, decorations, and water, making aquarium care simpler and more effective for hobbyists and professionals alike.











| ASIN | B000255N3W |
| Allergen Information | Apple Free |
| Best Sellers Rank | 2,656 in Pet Supplies ( See Top 100 in Pet Supplies ) 29 in Aquarium Water Treatments |
| Brand | API |
| Brand Name | API |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 11,642 Reviews |
| Global Trade Identification Number | 00317163160565 |
| Item Form | Liquid |
| Item Type Name | API STRESS ZYME CLEANING SOLUTION 473ML BOTTLE FOR FRESHWATER AND SALINE AQUARIUM |
| Item Weight | 544.31 Grams |
| Item form | Liquid |
| Item height | 10 inches |
| Item weight | 544.31 Grams |
| Liquid Volume | 473 Millilitres |
| Liquid volume | 473 Millilitres |
| Manufacturer | API |
| Target Species | Fish |
| UPC | 317163160565 |
| Unit Count | 473.0 millilitre |
S**N
Great item
Have used this product religiously on my water changes and don't ever see that changing
K**A
Useful for starting a new tank
It simply replaces all those starter kits as you can double the dose for a new aquarium to boost the biological filter. What a brilliant product! My guppies are happy with this.
N**N
Fish
Good value for money
A**J
Works
Bit pricey but works for regular use
A**.
API Stress Zyme+
Been using this for years. No problems and does it's job in conjunction with API water conditioner.
B**N
Many thanks
Great product
G**V
Very good
Good
J**Z
Great product
Love this product. Aside from being effective it is cheaper than others.
Trustpilot
1 week ago
2 weeks ago