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API Stress Zyme is a 1.9L aquarium cleaning solution designed for both freshwater and saltwater tanks. It reduces maintenance by consuming sludge and algae, while adding beneficial bacteria to promote a healthy aquatic environment. Ideal for weekly use, it also doubles as a powerful starter treatment for new tanks, ensuring your fish thrive in a clean, balanced habitat.













| ASIN | B000256DIQ |
| Allergen Information | Apple Free |
| Best Sellers Rank | 3,605 in Pet Supplies ( See Top 100 in Pet Supplies ) 38 in Aquarium Water Treatments |
| Brand | API |
| Brand Name | API |
| Country Of Origin | USA |
| Customer Reviews | 4.7 out of 5 stars 11,745 Reviews |
| Global Trade Identification Number | 00317163100561 |
| Included Components | API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle |
| Item Form | Liquid |
| Item Type Name | Aquarium Sludge Remover |
| Item Weight | 4.1 Pounds |
| Item form | Liquid |
| Item weight | 4.1 Pounds |
| Liquid Volume | 64 Fluid Ounces |
| Liquid volume | 64 Fluid Ounces |
| Manufacturer | API |
| Manufacturer Part Number | 56J |
| Model Number | 56J |
| Number of Packs | 1 |
| Target Species | Fish |
| UPC | 317163100561 |
| Unit Count | 1 count |
| 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**.
Tank treatment
Good value for money
A**J
Works
Bit pricey but works for regular use
S**N
Great item
Have used this product religiously on my water changes and don't ever see that changing
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 itโs taken me about a month to get round to getting some more. In that period the tank hasnโt 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 Iโve missed water changes โ using this helps maintain a reasonable level of cleanliness. Itโs priced the same on here (ยฃ7.98 at time of writing) as the smaller bottle is in my local pet store so no complaints there.
B**N
Many thanks
Great product
J**Z
Great product
Love this product. Aside from being effective it is cheaper than others.
S**M
El agua no se enturbia
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
Suggest
I love the brand
D**S
So far, so good
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.
L**E
Must product for fish keepes
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
Very good
Trustpilot
1 month ago
3 days ago