

🧪 Transform your tank with nature’s own cleaning crew!
API STRESS ZYME is a 16-ounce liquid aquarium cleaning solution containing over 300 million live bacteria per teaspoon that naturally consumes sludge and organic debris. Suitable for both freshwater and saltwater aquariums, it reduces maintenance by keeping gravel, decorations, and filters clean while supporting a healthy biological filter. Trusted for nearly six decades, API offers a proven, easy-to-use formula that promotes a balanced and vibrant aquatic environment.













| ASIN | B000255N3W |
| ASIN | B000255N3W |
| Allergen Information | Apple Free |
| Best Sellers Rank | #3,929 in Pet Supplies ( See Top 100 in Pet Supplies ) #20 in Aquarium Water Treatments |
| Brand Name | API |
| Customer Reviews | 4.8 4.8 out of 5 stars (12,060) |
| Date First Available | June 20, 2004 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00317163160565 |
| Is Discontinued By Manufacturer | Yes |
| Item Form | Liquid |
| Item Type Name | Aquarium Sludge Remover |
| Item Weight | 544.31 Grams |
| Item model number | 56E |
| Liquid Volume | 473 Milliliters |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 56E |
| Model Number | 56E |
| Product Dimensions | 10 x 10 x 10 inches; 1.2 Pounds |
| Target Species | Fish |
| UPC | 317163160565 |
| Unit Count | 1 Count |
K**R
Great product
Works great! Simple directions and great value for the price.
S**R
10/10
Works really well with my tank keeping the water clear and helping reduce sludge on the filters which helps maintenance and keeping it running longer
G**O
Clear water
It works great. Keep my water crystal clear.
J**N
Great for my aquatic frogs
I use this religiously with my African dwarf frogs! They are still kicking strong after 3 years so it must be working!
C**G
... used Stress Zyme for quite awhile and had relatively good experiences with it
I've used Stress Zyme for quite awhile and had relatively good experiences with it. More recently though I've moved to Seachem Stability and found that I prefer it. The Seachem product is more expensive but I've had great success with their line of products and find that Stability works great. Having said that I don't' want to give a negative impression of API's Stress Zyme. It does a good job of establishing and maintaining your biological filtration which is solely responsible for keeping your tanks nitrogen cycle in check. The Stress Zyme, like other "bottled bacteria", is a blend of anaerobic and aerobic bacteria and a "slime coating" agent that helps keep fish happy and healthy. The bacterial agents don't seem to be as "potent" as some others I've used like I mentioned earlier. But, the slime coat portion is more noticeable. When Stress Zyme goes into the water you can see that it has an almost oily consistency that rapidly dissipates into the water column and I'm sure does a good job of keeping your fish... hmm... lubricated (for lack of a better word). Water parameter tests have come up good with API Stress Zyme and there seems to be no negative effects on any of my fish or plants from using or even overdosing it. It's relatively inexpensive and does a good job. If you can't afford Seachem Stability (which I think is a better product) I wouldn't hesitate to recommend Stress Zyme.
A**6
Amazing product. Really works.
I use this weekly, RELIGIOUSLY. I do not miss a dose. This is my tank today, having not touched the filter in 18 months. (Fluval FX6 filled with only biohome filter media and polishing sponges.) I’ve only changed out the live plants when needed (pothos houseplant clippings) and used the magnetic algae glass scraper when needed. It’s a 75 gallon tank. I8 MONTHS!!! I highly recommend this product. Zero odor, zero nastiness.
T**.
This really works
This really works! My plecostomoas was completely stressed out due to a faulty heater and was COMPLETELY pale in color. I started with a double dose and used it weekly and he is now over 75% back to normal color. Definitely recommend this for regular maintenance of your aquarium.
K**A
Siempre lo utilizo en mi pecera
K**A
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.
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
TrustPilot
1 周前
5天前