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🧪 Transform your tank into a crystal-clear aquatic oasis—because your fish deserve the best!
API STRESS ZYME is a scientifically formulated aquarium water cleaning solution containing over 300 million live bacteria per teaspoon. Designed for both freshwater and saltwater tanks, it naturally consumes sludge and organic waste, reducing maintenance and promoting a healthy biological filter. Use weekly to maintain crystal-clear water and a thriving aquatic environment, backed by over 50 years of API’s trusted expertise.
| ASIN | B0002AQLJW |
| Allergen Information | Apple Free |
| Best Sellers Rank | 3,049 in Pet Supplies ( See Top 100 in Pet Supplies ) 28 in Aquarium Water Treatments |
| Brand Name | API |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.7 4.7 out of 5 stars (11,736) |
| Global Trade Identification Number | 00317163040560 |
| Item Form | Liquid |
| Item Type Name | Aquarium Sludge Remover |
| Item Weight | 136.08 Grams |
| Liquid Volume | 4 Fluid Ounces |
| Manufacturer | API |
| Manufacturer Part Number | 56C |
| Model Number | 56C |
| Target Species | Fish |
| UPC | 317163040560 |
| Unit Count | 1 count |
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
S**N
Great item
Have used this product religiously on my water changes and don't ever see that changing
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
O**.
Combined with regular water changes this product keeps things nice and clean
I was sceptical at first as it's hard to prove that it was doing much as I began using it after resurrecting a tank that was left to wallow by a colleague. How does one know which of the cleaning products and techniques are keeping things clean? I recently ran out of this and it’s taken me about a month to get round to getting some more. In that period the tank hasn’t turned into a jungle but I have noticed that it is slightly dirtier than when I was regularly using this. The cap has a built in measurer, I use a cap full once a week on a medium 50 litre tank with 1 goldfish and 3 snails in. Combined with regular water changes this product keeps things nice and clean, and even when I’ve missed water changes – using this helps maintain a reasonable level of cleanliness. It’s priced the same on here (£7.98 at time of writing) as the smaller bottle is in my local pet store so no complaints there.
J**Z
Great product
Love this product. Aside from being effective it is cheaper than others.
S**M
Producto muy recomendable!el agua no se enturbia para nada,hay que tener un buen filtro,el mio no funciona bien y el agua no esta sucia pero huele mal por el filtrado,el producto es buenisimo.
S**A
I love the brand
D**S
I was having some issues controlling nitrites. Used it, two days later, down to zero and stable. I don't see any issues with my Ph, fish, snail, shrimp and plants. I'll keep dosing the water as instructed.
S**E
My regular go to solution after water change.. this has helped my ponds as well as big tanks for maintaining good bacterial colonies in sump and canister filters
T**I
Very good
Trustpilot
2 weeks ago
5 days ago