API Nitrifying Bacteria Aquarium Water Treatment, 4 oz, freshwater and saltwater
API Nitrifying Bacteria Aquarium Water Treatment, 4 oz, freshwater and saltwater
Save when you buy more than one
Couldn't load pickup availability
API Nitrifying Bacteria Aquarium Water Treatment, 4 oz, freshwater and saltwater

Where API Nitrifying Bacteria Aquarium Water Treatment,... fits in your dog's day
Three short notes on who this product suits, how owners use it and what they keep an eye on, with your vet as the person to ask about health questions.
-
1Who it's for
Owners looking for food, chews or training treats that match their dog's size, life stage and the feeding plan they already follow.
-
2How to use it
Check the feeding table and switch foods gradually over several days.
-
3What owners notice
Owners keep an eye on how eagerly their dog eats, how the portion fits into the rest of the day and whether the pack size suits the way they shop.
About this product
This 4 oz bottle of aquarium nitrifying bacteria is a liquid water treatment for freshwater and saltwater tanks. The bacteria are live and nitrifying, and the bottle needs no refrigeration. The manufacturer lists it for new setups, new fish, water changes, filter media changes, after medication, and whenever ammonia or nitrite shows up on a test.
What fish keepers report after dosing
Several reviewers mention that the treatment worked well and report no fish losses. A few reviewers describe cloudy or discoloured water after use, and two note that the dose seems concentrated or the instructions unclear. Two reviewers call the bottle good value for its size.
How the bottle fits into a tank routine
- The liquid contains live nitrifying bacteria, so the bottle is dosed straight into the tank water.
- The manufacturer says fish can be added straight away when a new aquarium is set up.
- Dosing is also listed for the day new fish go in, so a stocking change comes with a dose.
- A water change or a filter media change is another point where the directions call for a dose.
- Treatment after medication is listed too, once the course is finished.
- Whenever a test reads ammonia or nitrite, the directions call for the product.
| Size | 4-Ounce |
|---|---|
| Colour | multi natural |
| Model | 89C |
| Style | Freshwater |
| Material | Plastic |
| Item form | Liquid |
| Item weight | 136 g (4.8 oz) |
| Target audience | fish |
| Item dimensions (L x W x H) | 3.8 x 3.8 x 15.2 cm (1.5 x 1.5 x 6 in) |
Does it suit your tank?
The bottle is listed for freshwater and saltwater aquariums, so both tank types are covered. It suits a new aquarium where fish are going in at the same time, and an established tank where a water change, a filter media swap or a course of medication has just happened. The plastic bottle holds 4 oz and measures 1.5 x 1.5 x 6 in, and it can stay out of the fridge.
What is in the liquid
The formula is a liquid carrying live nitrifying bacteria, and that is the ingredient the manufacturer names. The bottle itself is plastic and holds 4 oz, which weighs 136 g (4.8 oz) with the contents. The style listed is freshwater, while the compatibility statement covers saltwater tanks as well.
Questions buyers ask before dosing
How much liquid is in the bottle?
The bottle holds 4 oz, and the filled bottle weighs 136 g (4.8 oz).
Can it go in a saltwater tank?
Yes, the manufacturer lists it for freshwater and saltwater aquariums.
Does it need to be kept in the fridge?
No, the bottle needs no refrigeration.
When do I add it to the tank?
The directions list a new aquarium, new fish, a water change, a filter media change, the period after medication, and any time a test shows ammonia or nitrite.
Can fish go in a brand new tank at the same time?
Yes, the manufacturer states that fish can be added instantly when a new aquarium is started with this product.
Product details
| Brand | API |
|---|---|
| Product type | Aquarium Water Treatment |
| Department | API Canada |
| Sold by | DogJointly, operated by YALEO LLC |
| Delivery | Free standard US delivery, usually 7 to 14 business days after 1 to 3 days to prepare |
| Returns | 30 days on unopened items in their original packaging, with damaged or wrong items covered at our cost |
Delivery and tracking
Standard delivery is free to every US address, we prepare orders in 1 to 3 business days, delivery usually takes 7 to 14 business days, and the tracking link arrives by email when the parcel ships.
Returns and refunds
You can return unopened items in their original packaging within 30 days of delivery. Damaged, faulty or wrong items are replaced or refunded at our cost, so please read the refund policy and contact us before you send anything back.
How Subscribe and Save works
Choose the subscription option above the cart button to receive this product on a regular schedule at the lower subscription price. You can skip a delivery, change the schedule or cancel from your account or by writing to support@dogjointly.com.
Multi-buy savings
Pick 2, 3 or 4 units in the quantity cards to save 10, 15 or 25 percent on the item price. The saving is shown in the cart before checkout, so you can compare the total with a single unit.
Labels, ingredients and your vet
Ingredient lists and serving tables can change between batches, so the label on the pack you receive is the reference to follow. Please ask your vet before starting a supplement, especially for a senior dog or a dog on medication.
Questions about this product
Is API Nitrifying Bacteria Aquarium Water Treatment, 4 oz, freshwater and saltwater available in the United States?
Yes, it is in stock at DogJointly and ships free to US addresses, usually within 7 to 14 business days after 1 to 3 days to prepare.
How should I compare API Nitrifying Bacteria Aquarium Water Treatment,... with similar products?
Compare the brand, format, serving table and pack size in the details above with similar items in API Canada, and check the choice with your vet.
Where can I find delivery and returns information?
Delivery and returns are summarised on this page and set out in full in the shipping and refund policies linked in the footer of every page.
Guides and order help
Reading that helps you compare products, plus the pages that answer delivery and return questions.










