API Betta Aquarium Water Care, 31-oz bottle

Rated 4.6667 out of 5 stars


Selected: Count:


Selected: Count:

$8.48Chewy Price
$10.60Chewy Price
$8.06Autoship Price
Autoship (Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
Temporarily Out of Stock
Get notified when this item is back in stock.

Compare Similar Items

Customer Rating
Rated 3.2941 out of 5 stars
Rated 3.2 out of 5 stars
Rated 3.75 out of 5 stars
Rated 3.5 out of 5 stars
Rated 4.0735 out of 5 stars
$6.99Chewy Price
$6.48Chewy Price
$8.99Chewy Price
$9.40Chewy Price
$5.49Chewy Price
$6.64Chewy Price
$6.16Chewy Price
$8.54Chewy Price
$8.93Chewy Price
$5.22Chewy Price
Fish TypeBettaTropical FreshwaterKoi & Pond FishBetta, Bottom Feeder, Cichlid, Goldfish, Tropical Freshwater
Aquarium TypeFreshwaterFreshwaterPondFreshwaterFreshwater
Top IngredientsPoly(oxyethylene) (dimethylimino) Ethylene (dimethylimino) Ethylene Dichloride: 5.40%...

About This Item


  • Comes in a convenient 31-oz bottle.
  • Pre-conditioned and comes ready to use with zero preparation required.
  • Simply pour it in your Betta fish aquarium or bowl and add your finned friends.
  • pH balanced with low mineral content and no chloramines, chlorine, heavy metals or ammonia.
  • Use when starting a new aquarium or bowl for your Betta fish or when changing their water.

See More


About API Water Conditioners

It’s Smart To Be Proactive!

The best way to keep your aquarium clean is to maintain good water quality. This will help keep your fish strong and vibrant and prevent disease. Water conditioners and test kits from API can help you keep your aquarium water safe and healthy.

How Do I Maintain a Healthy Environment?

It is important to test your aquarium water weekly to ensure it stays healthy for your fish.  In addition, a bi-weekly partial water change of no more than 25% will help reduce toxic buildup, remove debris the filter missed, and replenish the oxygen available to your fish.

Feed Twice Daily and Test Water Weekly

Feed your fish twice a day, check their water temperature, and observe them to make sure they are active. You should also test water quality weekly for optimal safety. For fish to thrive, their water must closely match that of their natural environment—poor water quality can cause stress, illness and even fish loss. The 6 important parameters for healthy aquarium water are ammonia, nitrite, nitrate, pH and water hardness (GH & KH). All of these can vary over time and are invisible to the eye.

Change Water and Restore the Ecosystem

In a closed aquarium environment, there are no natural rivers or streams to carry away debris and other waste materials. That is why you should replace 25% of your aquarium water every two weeks, making sure to add water conditioner to your tap water to make it safe for your fish. You should also change your filter media and clean your gravel monthly. Adding beneficial nitrifying bacteria with API Quick Start when you do will help restore your aquarium’s fragile ecosystem and avoid disruption.

What Do API Products Do and When Do I Use Them?

API Test Kits

Use test kits weekly to monitor water quality parameters, which can vary over time and impact the health of your fish.

API Stress Zyme

Using this every week will help keep your aquarium clean and your gravel and ornaments sludge-free.

API Algaefix

Use weekly to control algae growth and keep aquarium glass, ornaments and plants clean.

API Stress Coat

Use every 2 weeks during water changes to make tap water safe, and when adding fish, or when fish are injured.

About API

The team at API has a passion for fish and understands the rewards and relaxation fishkeeping can bring. For almost 60 years, they have developed premium products with a focus on proven and effective results. API offers a range of testing kits, water conditioners and nutritionally superior fish foods. They are dedicated to making a better underwater world for the benefit of fish and those who keep them.

Shop API

Questions & Answers

Be the first to ask a question.

ReviewsWrite a Review

Rated 4.6667 out of 5 stars
3 Ratings
Would recommend to a friend

2 Customer Reviews

Rated 5 out of 5 stars
By Catlady on Jun 15, 2021

So convenient

Love this water, makes my life so much easier. The tank always looks clear and the fish enjoy it when I pour it in. I don't mind the price for the convenience and not lugging water across the house to the tank. Highly recommend.

Rated 4 out of 5 stars
By Kml530 on Feb 24, 2021

Betta water

I've been using this API Betta water for months, I love that it's ready to use but the only thing I don't like is that the water looks cloudy after a few days, not sure why.