API Freshwater Aquarium Salt

Rated 4.8033 out of 5 stars


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Fish TypeBetta, Bottom Feeder, Cichlid...Koi & Pond FishMarine Fish, Marine InvertebrateMarine Fish, Marine InvertebrateBottom Feeder, Tropical Freshwater
Aquarium TypeSaltwater, FreshwaterPondSaltwaterSaltwaterFreshwater

About This Item


  • Made from all-natural evaporated sea water for freshwater aquariums.
  • Helps provide fish with essential electrolytes.
  • Only add to reduce stress during new aquarium setup and water changes or to promote disease recovery when solving specific health issues in fish.
  • Promotes recovery from diseases to help increase fish health and reduce stress.
  • The salt formula helps keep your freshwater fish healthy.

See More



Play Video: Learn More About API From Our Team of Experts
Learn More About API From Our Team of Experts

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

19 Customer Questions

Can I use this if I have snails? I have two nerites and two mysteries. I want to use it for my goldfish to help with his treatment, as I believe it would definately finish it off greatly, but I have read it can kill snails and then others say it can not. Will this specific container kill my snails?
Answer by ChewyMar 24, 2020
API Aquarium Salt can be used with freshwater snails in the aquarium.

Is this safe for my pleco?
Answer by ChewyMar 13, 2019
This is safe for plecos and other freshwater fish.

Will aquarium salt affect aquatic plants?
Answer by ChewyApr 26, 2019
Care should be taken when using salt with live plants, as some plants may be sensitive.

I have african dwarf frogs along with my betta, is this safe to use with them?
Answer by ChewySep 09, 2020
API Freshwater Aquarium Salt is suitable for use with African dwarf frogs present in the aquarium.

ReviewsWrite a Review

Rated 4.8033 out of 5 stars
61 Ratings
Would recommend to a friend

61 Customer Reviews

Rated 5 out of 5 stars
By Barlow on Nov 9, 2023

Good Value for Aquarium Salt

I'm an "old school" aquarium keeper and still use a little salt in my fish tanks. I like the API brand for my aquarium supplies.

Rated 5 out of 5 stars
By Yofrendonna on May 21, 2023

Essential item for my aquarium water

This is an item that I use routinely in my tropical fish aquarium. Aquarium salt promotes healing should a fish sustain an injury.

Rated 5 out of 5 stars
By Carlos on May 25, 2023

fresh water aquarium salt

This is the Same brand I always use just lower cost

Rated 5 out of 5 stars
By Sidney on Aug 5, 2023

aquarium salt

Best value for the money

Rated 1 out of 5 stars
By salt on Feb 21, 2023

aquarium salt

It was open and all over the box when I opened it.

Rated 5 out of 5 stars
By Bags on Nov 11, 2022

Great value

Great value and great item. My fish are doing excellent.

Rated 5 out of 5 stars
By ryn2011 on Jul 14, 2022

Good Stuff

I use this for all my aquariums both for regular maintenance and quarantine. It's a nice size for the price and lasts a while.

Rated 5 out of 5 stars
By kitten on Apr 2, 2022

API aquarium salt

My son introduced me to the API aquarium salt several years ago great add on to my aquarium for the health of my fish it can also be used for sick fish all so.I do recommend the product for a healthy aquarium.

Rated 5 out of 5 stars
By Tey on Feb 19, 2022

Perfect for keeping fish healthy

Make sure to follow instructions, don't screw over your shrimp or snails with too much salt. This salt is really good though, helps tears in fins heal quickly. The largest batch is the best batch to get you'll be using it a lot in water changes.

Rated 5 out of 5 stars
By Good on Jan 8, 2022

Good product

Good product. I will buy again. Better deal on Chewy than the store :)