The build-up of organic pollution in the aquarium inhibits the growth of nitrifying bacteria. The bacteria in API Stress Zyme keep conditions in the aquarium right for the development of the biological filter by consuming harmful organic pollutants. This speeds the development of the biological filter in newly set up aquariums. A build-up of organic compounds also promotes the growth of disease-causing organisms in the aquarium. API Stress Zyme keeps the biological filter working properly by keeping the aquarium gravel and filter clean. Water quality and living conditions are improved when it is used on a regular basis. Each teaspoonful contains 300 million bacteria. These bacteria are in a dormant state and become active when added to the aquarium. Stress Zyme has a five year shelf life and does not require refrigeration. It is effective in freshwater and marine aquariums.Image is for illustration purposes.
The build-up of organic pollution in the aquarium inhibits the growth of nitrifying bacteria. The bacteria in API Stress Zyme keep conditions in the aquarium right for the development of the biological filter by consuming harmful organic pollutants. This speeds the development of the biological filter in newly set up aquariums. A build-up of organic compounds also promotes the growth of disease-causing organisms in the aquarium. API Stress Zyme keeps the biological filter working properly by keeping the aquarium gravel and filter clean. Water quality and living conditions are improved when it is used on a regular basis. Each teaspoonful contains 300 million bacteria. These bacteria are in a dormant state and become active when added to the aquarium. Stress Zyme has a five year shelf life and does not require refrigeration. It is effective in freshwater and marine aquariums.Image is for illustration purposes.
The build-up of organic pollution in the aquarium inhibits the growth of nitrifying bacteria. The bacteria in API Stress Zyme keep conditions in the aquarium right for the development of the biological filter by consuming harmful organic pollutants. This speeds the development of the biological filter in newly set up aquariums. A build-up of organic compounds also promotes the growth of disease-causing organisms in the aquarium. API Stress Zyme keeps the biological filter working properly by keeping the aquarium gravel and filter clean. Water quality and living conditions are improved when it is used on a regular basis. Each teaspoonful contains 300 million bacteria. These bacteria are in a dormant state and become active when added to the aquarium. Stress Zyme has a five year shelf life and does not require refrigeration. It is effective in freshwater and marine aquariums.Image is for illustration purposes.
The build-up of organic pollution in the aquarium inhibits the growth of nitrifying bacteria. The bacteria in API Stress Zyme keep conditions in the aquarium right for the development of the biological filter by consuming harmful organic pollutants. This speeds the development of the biological filter in newly set up aquariums. A build-up of organic compounds also promotes the growth of disease-causing organisms in the aquarium. API Stress Zyme keeps the biological filter working properly by keeping the aquarium gravel and filter clean. Water quality and living conditions are improved when it is used on a regular basis. Each teaspoonful contains 300 million bacteria. These bacteria are in a dormant state and become active when added to the aquarium. Stress Zyme has a five year shelf life and does not require refrigeration. It is effective in freshwater and marine aquariums.Image is for illustration purposes.
Last updated at 05/15/2026 08:12:46
API Zyme Water Treatment, 118 ml (Pack of 1), 56C
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
API Stress Zyme Freshwater and Saltwater Aquarium Water Cleaner, 118ml
Delivery between 20–29 May $6.95
API, Stress Zyme Plus Aquarium Cleaning Solution, 4 oz (Treats 240 Gallons)
Delivery $16.23
Api Stress Zyme 118ml
API Stress Zyme 118ml
API Stress Zyme 118ml – Aquarium Bacterial Cleaner | Aquaristic Online
Api Stress Zyme - 118 ml
Free delivery between 19–26 May
API Stress Zyme Freshwater And Saltwater Aquarium Water Cleaner 118ml
Delivery between 20–25 May $6.31
API Stress Zyme 118ml
Delivery between 22–25 May $10.91
API Stress Zyme 118ml Biological Filter Bacteria Fish Tank Aquarium healthcare
originally posted on thetechden.com.au
Works very well. It keeps my tank clean as I have one very large goldfish! plus two smaller fish.
originally posted on petco.com
Have been using this for a year and will not change. The fish seem to like to swim in it when I add it to the tank...like they are taking a shower. And I have had very few deaths since starting this and two other API products when adding water, making water changes, or adding fish. Newborns in both tanks are doing well too.
originally posted on thetechden.com.au
This product is a weekly 'top up' dose of bacteria essential to healthy aquariums, and combats toxic ammonia and nitrite build up. The bacteria also break down organic sludge. A general tank health product, it can reduce the stress on water chemistry caused by medications that damage beneficial bacteria colonies.
| Product dimensions | 25.4 x 25.4 x 25.4 cm; 136.07 Grams |
| Country of origin | USA |
| Is discontinued by manufacturer | Yes |
| Liquid volume | 4 Fluid Ounces |
| Item form | Liquid |
API Zyme Water Treatment, 118 ml (Pack of 1), 56C
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
API Stress Zyme Freshwater and Saltwater Aquarium Water Cleaner, 118ml
Delivery between 20–29 May $6.95
API, Stress Zyme Plus Aquarium Cleaning Solution, 4 oz (Treats 240 Gallons)
Delivery $16.23
Api Stress Zyme 118ml
API Stress Zyme 118ml
Works very well. It keeps my tank clean as I have one very large goldfish! plus two smaller fish.
Have been using this for a year and will not change. The fish seem to like to swim in it when I add it to the tank...like they are taking a shower. And I have had very few deaths since starting this and two other API products when adding water, making water changes, or adding fish. Newborns in both tanks are doing well too.
This product is a weekly 'top up' dose of bacteria essential to healthy aquariums, and combats toxic ammonia and nitrite build up. The bacteria also break down organic sludge. A general tank health product, it can reduce the stress on water chemistry caused by medications that damage beneficial bacteria colonies.
Generous size bottle. Fast shipping. Water looks clearer and more active fish.
If I could give zero stars I would! I bought this yesterday and put the amount directed in my saltwater tank. It was supposed to "lower the ammonia and nitrates." After 3 hours, I went and checked on the ammonia and nitrate levels to find that there was no change whatsoever. So , I doubled the dose, waited till morning, and STILL NOTHING happened! Waste of money. Instead, buy Seachem Purigen. It works 100%, while API STRESS ZYME+ does NOTHING!
I use Stress Zyme in my tank. I just happened to stumble upon this website & I searched for it & they had it. This is a great size bottle & it should last for a while. Company was fantastic, shipping & received very quickly & the price didn’t break the bank. Totally recommend this company & will definitely order items from them again. A+++ 😀
Great for cleaning gravel etc. we have a 29 gallon tank with many different tropical fish. Will turn things white initially likely due to good bacteria but goes away as part of process
I am getting back into my tropical fish hobby after almost 8 years and I must say I forgot about letting my aquarium go through the cycle process. I bought fish after 2 days of the aquarium running and it went into a bacteria bloom. It got really cloudy so I had to do so some research after finding out that after buying solutions to clear your water will not solve the problem.I saw this product on a youtube video and went out right away to purchase it. My aquarium cleared up in 2 days. Now it has been cycling for 3 weeks and I have been running daily water test and everything is good. Fortunately I only added 2 fish, but they are doing quite well and my water is crystal clear. What I did was double the recommended dosage each week.
I always recommend Indiefur above every other seller as they sell genuine product at right market price, unlike any amazon or flipkart seller who sells the same product at a higher MRPs then the original market price. Also the delivery is fast & well packed. They take care of the cuatomer preferences & they deliver the product fast & seamlessly. Good work Indiefur team. Thank you!!
I ordered twice from AquariumKingdom. The first is Stress Zyme and Stress Coat, and the second one is API Bettafix. These things make changing water easier for me and help to improve my fish's health. However, I'm not too sure if the BettaFix helps cure my fish's popeyes. I change the water every two days before the BettaFix treatment, but nothing happens. After the treatment, my fish's eye colour changes, but the swelling decreases a bit after two days Anyway, the products come in good shape and good packaging. Fast delivery. Will order again if I need anything for my fish.
| Product dimensions | 25.4 x 25.4 x 25.4 cm; 136.07 Grams |
| Country of origin | USA |
| Is discontinued by manufacturer | Yes |
| Liquid volume | 4 Fluid Ounces |
| Item form | Liquid |
