API Pond Stress Coat Water Conditioner, 32-fl oz bottle

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About This Item

Details

  • Dual action additive makes tap water safe and protects your fish in your freshwater pond.
  • Conditions water by removing chlorine, chloramines and ammonia and neutralizing heavy metals.
  • Forms a synthetic slime coating to replace the natural secretion of slime that is interrupted by stress.
  • Aloe vera helps to heal wounds and promote regeneration of damaged tissue.
  • Helps reduce fish stress which may lower susceptibility of disease and infection.

Instructions

FAQ

Learn More About API From Our Team of Experts

Special Note
  • 16-oz bottle treats up to 1920 gallons.
  • 32-oz bottle treats up to 3840 gallons.
  • 64-oz bottle treats up to 7600 gallons.
  • 1-gallon bottle treats up to 15360 gallons.

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.

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Questions & Answers

4 Customer Questions


Can I use this water conditioner in a fish aquarium in the my house

Answer by ChewyAug 11, 2020
The API Pond Stress Coat is safe for all fish, including koi and goldfish, invertebrates, and plants.

Is it safe if my cats drink the pond water

Answer by ChewySep 18, 2021
While it is important to keep the bottles of concentrated product away from animals, once the product is diluted per the dosing instructions, it is then possible for any pets or wildlife to come and either swim or take a drink from the water. You do not need to keep pets and wildlife away from the water.

Can this be used in aquariums also? Second question will this help with well water?

Answer by ChewyFeb 04, 2019
This may be used within an aquarium, if proper dosage is measured for a much smaller quantity. For aquariums we typically recommend the API Stress Coat Aquarium Water Conditioner, since much smaller amounts will be needed. This conditioner will help to remove chlorine, chloramines, and detoxify heavy metals.

Do you dose for the amount of water you are adding or for the whole pond.?

Answer by ChewyDec 20, 2018
If you are using the Pond Stress Coat as a dechlorinator to make tap water safe, you should dose enough for the amount of new water you are adding to the aquarium. If you are using the Pond Stress Coat to help the fish recover from injury or disease, then you should use dose enough for the amount of water in the whole pond.
4.9
Rated 4.9 out of 5 stars
108 Ratings

38 Customer Reviews



Rated 5 out of 5 stars
By Debbie on Jul 9, 2025

BEST water conditioner

If you have fish, this is what you need to use to take out chlorine or chloramide. Call fish have a stress coat and lose it once in a while this just add it back

If you have fish, this is what you need to use to take out chlorine or chloramide. Call fish have a stress coat and lose it once in a while this just add it back to them.


Rated 5 out of 5 stars
By Bill on Jun 8, 2025

Overall good.

After pouring it in, my pond water became a little foamy from the aloe but quickly dispersed.

After pouring it in, my pond water became a little foamy from the aloe but quickly dispersed.


Rated 5 out of 5 stars
By Diane on Aug 9, 2025

Price and ship time !

Price and ship time !!!

Price and ship time !!!


Rated 5 out of 5 stars
By Anne on Feb 17, 2025

Rarely lose fish since using Stress Coat!

2000 gallon pond full of Koi and goldfish! Keeps them healthy and happy and easy to use.

2000 gallon pond full of Koi and goldfish! Keeps them healthy and happy and easy to use.


Rated 5 out of 5 stars
By Vickie on Apr 7, 2025

Needed for fish health

Fast shipping great product

Fast shipping great product


Rated 5 out of 5 stars
By Vanita on Oct 9, 2024

Koi Pond

Clear coat works wonders when cleaning the pond or adding water. The fish are always looking their best.

Clear coat works wonders when cleaning the pond or adding water. The fish are always looking their best.


Rated 5 out of 5 stars
By ANNETTE on Apr 23, 2025

Great Product

Chewy Is Wonderful

Chewy Is Wonderful


Rated 1 out of 5 stars
By Brian on Jan 18, 2025

Super Slow Shipping!

1-3 day shipping was 10 days.

1-3 day shipping was 10 days.


Rated 5 out of 5 stars
By Alexander on Jun 22, 2024

Works great

Functions as a dechlorinator and helps the fish protect/replenish their slime coat. I’ve used it for over a decade with no issues

Functions as a dechlorinator and helps the fish protect/replenish their slime coat. I’ve used it for over a decade with no issues


Rated 5 out of 5 stars
By Mac on May 13, 2024

Great Service

Our API Pond Stress Coat Water Conditioner is on Auto delivery for every 6 months. We appreciate the "month out" Chewy reminder this product is about to ship! Now

Our API Pond Stress Coat Water Conditioner is on Auto delivery for every 6 months. We appreciate the "month out" Chewy reminder this product is about to ship! Now if we could the prices from going up(: