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API STRESS COAT Aquarium Water Conditioner 4-Ounce Bottle.Acondicionador de agua para acuarios St...Merchant Video

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API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle

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4.8 36,379 ratings

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Size: 16 oz

Style: Aquarium Treatment

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Purchase options and add-ons

Brand	API
Liquid Volume	0.48 Liters
Item Weight	0.4 Pounds
Item Form	Liquid
Target Species	Fish

About this item

Contains one (1) API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle
Makes tap water safe and protects fish with dual-action formula
Removes chemicals from tap water that are harmful to fish
Replaces fish’s protective coat damaged by handling or fish fighting with healing power of Aloe Vera extract
Use when adding or changing water, when adding new fish and when fish are sick or injured
Instructions: Add 5 ml. for each 10 gallons of aquarium water. Double the dose to replace slime coat and to repair damaged skin and fins

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API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle

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API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 16-Ounce Bottle

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From the manufacturer

It’s Smart To Be Proactive!

The best way to keep your aquarium clean is to maintain good water quality. This will keep your fish strong and vibrant, as well as preventing disease.

How Do I Maintain A Healthy Environment?

It is important to test your aquarium water weekly to verify good quality in addition to a bi-weekly partial water change of no more than 25% to help reduce toxic buildup, remove debris the filter missed, and replenish the oxygen available to fish.

How Do I Take Good Care Of My Aquarium & Fish?

Feed & observe fish daily
Test water quality weekly
Change 25% water every 2 weeks
Restore your ecosystem monthly

Feed Your Fish Daily

Feed your fish twice daily with API Fish Food which contains nutritionally enhanced proteins, allowing for easy uptake of nutrients and maximum absorption, resulting in less excrement for clear, clean water. Take time to observe fish to ensure they are active & healthy and be sure to check water temperature.

Test Water Quality Weekly

An aquarium is a closed environment and in order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even loss. The 6 common water quality parameters are Ammonia, Nitrite, Nitrate, pH, and water hardness (GH and KH) - all of which may vary over time and all are invisible to the eye which is why it is important to test weekly with API MASTER TEST KITS or API 5-IN-1 TEST STRIPS. It is also a good time to add API STRESS ZYME to keep your aquarium & gravel clean.

Change 25% Water Every 2 Weeks

In a closed aquarium environment there are no natural rivers or streams to carry away debris and other waste materials. It is important to renew 25% of the aquarium water every two weeks. When you change the water, it is important to know that tap water contains chemicals that make it safe for us to drink but harmful for fish, therefore add a water conditioner such as API STRESS COAT.

Restore Your Ecosystem Monthly

It is important to change your filter media & clean gravel monthly, however in doing so it can disrupt the fragile ecosystem of your aquarium. Use API QUICK START to strengthen it with ‘beneficial’ nitrifying bacteria that will naturally consume toxic compounds and help prevent fish stress. Also recommended when starting a new aquarium or changing the water.

FEED FISH DAILY

TEST WATER QUALITY WEEKLY

CHANGE 25% WATER EVERY 2 WEEKS

RESTORE ECOSYSTEM MONTHLY

	API TEST KITS	API STRESS ZYME	API FIX	API STRESS COAT	API QUICK START	API MELAFIX

Customer Reviews	37,875	11,584	9,037	36,379	9,150	6,319
Price	$33.29	$16.18	$16.99	$10.99	$17.38	$14.38
Use Weekly	Helps monitor water quality	Keeps aquarium clean	no data	no data	no data	no data
Use Every 2 Weeks	no data	no data	no data	Makes tap water safe when changing water	Restores the ecosystem to help prevent fish stress	no data
Use Monthly	no data	no data	no data	no data	Restores the ecosystem to help prevent fish stress	no data
Use When Adding New Fish	no data	no data	no data	no data	no data	Prevents disease breakout

Making A Better Underwater World

At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world.

Product information

Item Weight

6.4 ounces

Department

Unisex-Adult

Manufacturer

Mars Fishcare

ASIN

B000255MZG

Country of Origin

USA

Item model number

85C

Customer Reviews

4.8 36,379 ratings

4.8 out of 5 stars

Date First Available

June 15, 2004

Item Package Dimensions L x W x H

8.43 x 2.2 x 2.2 inches

Item Dimensions LxWxH

5 x 1 x 5 inches

Item Weight

0.4 Pounds

Brand Name

API

Target Audience Keyword

fish

Directions

Use when setting up an aquarium, adding or changing water, when adding new fish, or when fish are damaged by injury or disease. Using dosing cap on bottle, add 5 ml per 10 gallons of aquarium water. Double the dose to replace slime coat and to repair damaged skin and fins. Use STRESS COAT together with API STRESS ZYME to assure good water quality and a healthy, clean aquatic environment.

Country of Origin

United States

Model Name

STRESS COAT, 16 OZ

Color

Multi-colored

Size

16 oz

Material

Plastic

Age Range Description

All Life Stages

Number of Items

Manufacturer

Mars Fishcare

Style

Aquarium Treatment

Breed Recommendation

All Breed Sizes

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Product Description

Treat your tap water, and provide a safe environment for freshwater fish instantly and easily with API STRESS COAT Freshwater Aquarium Water Conditioner. Tap water contains chlorine, chloramines and ammonia which can cause gill and tissue damage, breathing difficulty, stress and death. API STRESS COAT Aquarium Water Conditioner works instantly as a water conditioner to remove chlorine and chloramines from tap water and neutralize heavy metals. API STRESS COAT Freshwater Aquarium Water Conditioner Treatment contains aloe vera, and it is scientifically proven to reduce fish stress by 40% and heal damaged fish tissue. This conditioner replaces the natural secretion of slime that is interrupted by handling, shipping, fish fighting, or other forms of stress and helps heal torn fins and skin wounds while promoting tissue regeneration. API STRESS COAT is recommended by professional fish handlers. With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

Product details

Is Discontinued By Manufacturer ‏ : ‎ Yes
Product Dimensions ‏ : ‎ 5 x 1 x 5 inches; 6.4 ounces
Item model number ‏ : ‎ 85C
Department ‏ : ‎ Unisex-Adult
Date First Available ‏ : ‎ June 15, 2004
Manufacturer ‏ : ‎ Mars Fishcare
ASIN ‏ : ‎ B000255MZG
Country of Origin ‏ : ‎ USA

Best Sellers Rank: #666 in Pet Supplies (See Top 100 in Pet Supplies)
- #2 in Aquarium Water Treatments

Customer Reviews:
4.8 36,379 ratings

Top Brand: API

Highly Rated

100K+ customers rate items from this brand highly

Trending

100K+ orders for this brand in past 3 months

Low Returns

Customers usually keep items from this brand

WARNING: California’s Proposition 65

Important information

Safety Information

Please Read Instructions Before Use

Ingredients

Aloes, extract

Directions

Compare with similar items

	This Item API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle	Recommendations API AQUA ESSENTIAL Water Conditioner 16 ounce bottle	API STRESS COAT Aquarium Water Conditioner 4-Ounce Bottle (85B)	MICROBE-LIFT Aquatic Stress Coat and Fish Protector, Makes Tap Water Safe, Forms Multiple Layers of Fish Protection, 16oz,SRA16	Continuum Aquatics Stress Defense F – Stress Reducer and Slime Coat for Wounds, Freshwater Plant and Shrimp Safe, 500-ml	(2 Pack) API Stress Coat Fish and Tap Water Conditioner, 16-Ounce (Treats 946 Gallons) each
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	-29% $10.99 List: $15.38	-29% $15.75 List: $22.28	-24% $5.18 List: $6.79	$9.20	$13.89	-48% $23.82 List: $45.99
Delivery	Get it as soon as Friday, Mar 28	Get it as soon as Friday, Mar 28	Get it as soon as Friday, Mar 28	Get it as soon as Friday, Mar 28	Get it as soon as Friday, Mar 28	Get it as soon as Friday, Mar 28
Customer Ratings	4.836,379	4.71,870	4.836,379	4.368	4.68	4.8500
Sold By	Amazon.com	Amazon.com	Amazon.com	Amazon.com	Amazon.com	Monster Pets
target species	Fish	Fish	Fish	Fish	Shrimp	Fish
liquid volume	0.48 liters	16 fluid ounces	4 fluid ounces	16 fluid ounces	500 milliliters	473 milliliters
form	Liquid	Liquid	Liquid	Liquid	Liquid	Liquid

Customer reviews

36,379 global ratings

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Customers say

Customers find the aquarium pond water treatment effective and affordable. It works well for treating tap water and keeping fish healthy. They say it's worth the money, keeps fish safe, and lasts for a long time.

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Works great Value for money Fish health Water safety Longevity Chlorine removal Ease of use Aquarium use

936 customers mention "Works great"929 positive7 negative

Customers say the product works well for treating aquarium and tap water. It has no smell and is easy to dose. They say it works great for adding new fish and as a protective stress coat for aquatic life. Overall, customers are satisfied with the product's performance.

"...time I add fish to my pond or aquariums, and as of now I have a 100% success rate. The fish just thrive...." Read more

"...The most impressive part is its effectiveness. Since using this conditioner, I’ve noticed that my fish are visibly healthier and more active...." Read more

"I used this to set up my 55-gallon aquarium. Tested great and was able to introduce fish the next day...." Read more

"The product has turned out perfect, we have several fish tanks and everything has worked normally...." Read more

451 customers mention "Value for money"427 positive24 negative

Customers appreciate the value for money of this aquarium pond water treatment. They find it a small investment for the health benefits it brings, and consider it worth the cost. It lasts a long time for the price and is a great purchase for both beginners and advanced tanks.

"...It’s a small investment for the huge benefit it brings to the health and happiness of your aquatic pets." Read more

"I always use API products because they offer affordable prices." Read more

"...I always use Stress coat. This is the best price I have ever found." Read more

"...with my water changes and if fins have been damaged, this costs and helps the fish heal." Read more

355 customers mention "Fish health"345 positive10 negative

Customers appreciate the product's benefits for fish health. They find it helps keep their fish happy and healthy, with beautiful coats and clear water. It is described as a miracle medicine for fish and a first-resort treatment. Some customers mention that fish with cottonmouth improved over time after using the product.

"...We bought them from Toledo Goldfish right here. Beautiful and healthy fish. This is not a plug for Toledo Goldfish...." Read more

"...They seem more active and less stressed, and any minor injuries they had healed up faster than I expected...." Read more

"...Since using this conditioner, I’ve noticed that my fish are visibly healthier and more active...." Read more

"...Tested great and was able to introduce fish the next day...." Read more

221 customers mention "Water safety"210 positive11 negative

Customers appreciate the water safety provided by this product. It helps keep fish safe after heavy rain storms, reduces stress, and creates a protective slime coat on the fish that helps them heal more. They find it beneficial for fish entering unfamiliar water or when changing the tank water. The slime coat also keeps algae at bay in aquariums.

"...API Stress Coat works by creating a protective slime coat on the fish, which helps them heal more quickly and adapt better to changes in their..." Read more

"...chloramines, and heavy metals present in tap water, making it safer for the aquarium...." Read more

"I've used API Stress Coat for years. It is the best product on the market for treating the water before adding new water to the aquarium or while..." Read more

"...My sensitive plants are much happier!" Read more

141 customers mention "Longevity"118 positive23 negative

Customers appreciate the longevity of the product. They say it lasts a long time, keeps fish alive during shipping, and never had a fish die because of it. It clarifies the water and keeps their coats healthy.

"...The fish just thrive. I use it as directed and I have peace of mind...." Read more

"...is fantastic for reducing fish stress, which is crucial for maintaining a healthy tank...." Read more

"...Firstly, the 16-ounce size is very economical. It lasts quite a while even with regular use, which is great for someone who doesn’t want to..." Read more

"...Furthermore, well managed, it lasts a long time." Read more

139 customers mention "Chlorine removal"135 positive4 negative

Customers appreciate the product's ability to remove chlorine from water. They say it helps control chlorine levels in ponds and keeps water crystal clear. The product also helps remove heavy metals, chloramines, impurities, toxic chemicals, and minerals that could be tough for plants.

"...It also detoxifies chlorine and chloramine in tap water, which is a huge bonus...." Read more

"...Another major benefit is how it treats tap water. The conditioner neutralizes chlorine, chloramines, and heavy metals present in tap water, making..." Read more

"Keeps water good quality and clean with each fill and filter cleaning" Read more

"...😂 The water parameters are fine, no algae, clear water, and the fish and plants are in perfect condition. 10/10..." Read more

94 customers mention "Ease of use"94 positive0 negative

Customers find the aquarium water treatment easy to use and dose. The instructions are clear and understandable. It has no smell and allows them to change the fish tank with ease. The blue color makes it easy to measure out. It's good for beginners starter tanks, is small and adjustable, and there's good research about its anti-inflammatory and wound-healing properties.

"...The liquid is easy to dose and mixes well into the water without any fuss...." Read more

"...The application process is straightforward and easy – just follow the instructions on the bottle...." Read more

"...It makes it very simple to take care of the pond and knowing that it won't be overdosed if a little extra goes in." Read more

"...Very small and easy to adjust; plus it can be placed completely underwater in any position: vertical, horizontal, or on an angle...." Read more

87 customers mention "Aquarium use"87 positive0 negative

Customers like this product for aquarium use. It's a staple for aquarium keepers and is perfect for starting new tanks or adding new fish. Many consider it the second best thing to setting up an aquarium.

"Perfect for the aquarium." Read more

"I love this product and the fact that they make them specifically for ponds...." Read more

"...This is an excellent filter for my 5 gallon tank...." Read more

"...I ONLY trust API and Terra for all fish tanks.." Read more

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Top reviews from the United States

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StewartB
Cheap insurance to have beautiful and healthy fish!
Reviewed in the United States on January 20, 2025
Size: 16 ozStyle: Aquarium TreatmentVerified Purchase

The media could not be loaded.

I use this in my small pond and my aquariums.

Whenever I add new fish I use API Stress Coat.

I get a lot of my pond and aquarium fish shipped to me.

Sometimes fish can get injured from the packing and shipping process. Plus it does stress them out a lot.

I use API Stress Coat every time I add fish to my pond or aquariums, and as of now I have a 100% success rate. The fish just thrive.

I use it as directed and I have peace of mind.

In addition, buying pond and aquarium fish, especially on-line can be expensive. Especially when shipping costs are added.

Using API Stress Coat is cheap insurance.

I would rather use API Stress Coat and be proactive rather than having to cure an injured and / or sick fish.

IMHO, it's worth it.

(Oh yeah. I thought I'd point out that the Sarasa Goldfish and Shubunkin Goldfish you see in the pictures were purchased here on Amazon. We bought them from Toledo Goldfish right here. Beautiful and healthy fish. This is not a plug for Toledo Goldfish. Just an FYI if you are looking for beautiful and healthy goldfish.)

Read more

StewartB

Cheap insurance to have beautiful and healthy fish!

Reviewed in the United States on January 20, 2025
I use this in my small pond and my aquariums.

Whenever I add new fish I use API Stress Coat.

I get a lot of my pond and aquarium fish shipped to me.

Sometimes fish can get injured from the packing and shipping process. Plus it does stress them out a lot.

I use API Stress Coat every time I add fish to my pond or aquariums, and as of now I have a 100% success rate. The fish just thrive.

I use it as directed and I have peace of mind.

In addition, buying pond and aquarium fish, especially on-line can be expensive. Especially when shipping costs are added.

Using API Stress Coat is cheap insurance.

I would rather use API Stress Coat and be proactive rather than having to cure an injured and / or sick fish.

IMHO, it's worth it.

(Oh yeah. I thought I'd point out that the Sarasa Goldfish and Shubunkin Goldfish you see in the pictures were purchased here on Amazon. We bought them from Toledo Goldfish right here. Beautiful and healthy fish. This is not a plug for Toledo Goldfish. Just an FYI if you are looking for beautiful and healthy goldfish.)

Images in this review

2 people found this helpful

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Jose Jiménez
Works Wonders for My Fish
Reviewed in the United States on August 30, 2024
Size: 32-OunceStyle: Aquarium TreatmentVerified Purchase
I've been using API Stress Coat for a few months now, and I’m really pleased with how it’s helped my aquarium. This product is fantastic for reducing fish stress, which is crucial for maintaining a healthy tank. I started using it when I noticed some of my fish seemed a bit skittish and were showing signs of minor injuries.

API Stress Coat works by creating a protective slime coat on the fish, which helps them heal more quickly and adapt better to changes in their environment. It also detoxifies chlorine and chloramine in tap water, which is a huge bonus. The liquid is easy to dose and mixes well into the water without any fuss.

I’ve seen noticeable improvements in my fish’s behavior and overall health since I started using it. They seem more active and less stressed, and any minor injuries they had healed up faster than I expected. It’s now a regular part of my water change routine and has made a big difference in the well-being of my aquatic pets. If you’re looking for a reliable product to reduce stress and promote healing, API Stress Coat is definitely worth considering.

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7 people found this helpful

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Tye
Magic in a Bottle for Your Aquarium!
Reviewed in the United States on January 18, 2024
Size: 16 ozStyle: Aquarium TreatmentVerified Purchase
Having a home aquarium can be a tricky endeavor, especially when it comes to maintaining a healthy environment for your fish. This product has been a game changer for me.

Firstly, the 16-ounce size is very economical. It lasts quite a while even with regular use, which is great for someone who doesn’t want to constantly repurchase supplies. The application process is straightforward and easy – just follow the instructions on the bottle.

The most impressive part is its effectiveness. Since using this conditioner, I’ve noticed that my fish are visibly healthier and more active. Their colors are more vibrant, and they seem less stressed, especially after water changes or when introducing new fish to the tank. The product claims to reduce fish stress by 40% and it really seems to live up to that promise.

Another major benefit is how it treats tap water. The conditioner neutralizes chlorine, chloramines, and heavy metals present in tap water, making it safer for the aquarium. This is crucial for the wellbeing of the fish and helps maintain a balanced ecosystem in the tank.

Overall, I highly recommend the API STRESS COAT Aquarium Water Conditioner to any aquarium enthusiast. Whether you’re a beginner or an experienced fishkeeper, this product is a must-have in your aquarium care toolkit. It’s a small investment for the huge benefit it brings to the health and happiness of your aquatic pets.

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17 people found this helpful

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Bryan Blankenship
Works fast and great price...
Reviewed in the United States on January 20, 2025
Size: 16 ozStyle: Aquarium TreatmentVerified Purchase
I used this to set up my 55-gallon aquarium. Tested great and was able to introduce fish the next day. Probably could have put them in earlier but waited to make sure the tested levels were stable.

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Rick Ritchie
Great Product - but
Reviewed in the United States on January 16, 2025
Size: 16 ozStyle: Aquarium TreatmentVerified Purchase
I've used API Stress Coat for years. It is the best product on the market for treating the water before adding new water to the aquarium or while transferring fish. I subtracted one star from this particular order because the packager failed to make sure the lid was on tight and some of the product leaked out (see photo).

Read more

Rick Ritchie

Great Product - but

Reviewed in the United States on January 16, 2025
I've used API Stress Coat for years. It is the best product on the market for treating the water before adding new water to the aquarium or while transferring fish. I subtracted one star from this particular order because the packager failed to make sure the lid was on tight and some of the product leaked out (see photo).

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Fernanda Valdés
The products have turned out perfect
Reviewed in the United States on March 1, 2025
Size: 8 ozStyle: Aquarium TreatmentVerified Purchase
The product has turned out perfect, we have several fish tanks and everything has worked normally. The product come well packaged and their quality is as expected. We liked the price and quality. We have bought several things and they have all turned out good. Furthermore, well managed, it lasts a long time.

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Cheryl Gorman
Works wonderful
Reviewed in the United States on March 15, 2025
Size: 16 ozStyle: Aquarium TreatmentVerified Purchase
Keeps water good quality and clean with each fill and filter cleaning

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Reviews after one year
Good stuff at a good price
Reviewed in the United States on February 18, 2025
Size: 16 ozStyle: Aquarium TreatmentVerified Purchase
I always use API products because they offer affordable prices.

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Sharafath Shahul
Effective, but Tiny Bottle
Reviewed in Canada on November 1, 2024
Size: 1-OunceStyle: Aquarium TreatmentVerified Purchase

API Stress Coat is fantastic for my aquarium, but the 1-ounce bottle is pretty small. It works well for conditioning water and protecting fish, but it’s easy to go through it quickly.

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Román Andrade
Excelente Producto
Reviewed in Mexico on July 22, 2024
Size: 32-OunceStyle: Aquarium TreatmentVerified Purchase
Es un producto muy bueno para quitar cloro, cloraminas y metales pesados además de quitar el stress de los peces.

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SPARKY
I WILL CONTINUE TO BUY!!
Reviewed in Canada on July 19, 2024
Size: 64-OunceStyle: Aquarium TreatmentVerified Purchase
Some of my plants had brown tips. Told that they had chlorin poison. Since using this product all my plants are now beautiful w/no more brown tips on new leaves. I use10 litres of water with 2 tblspns of this product. I HIGHLY RECOMMEND.

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tri
👍🏻
Reviewed in the United Arab Emirates on January 21, 2025
Size: 8 ozStyle: Aquarium TreatmentVerified Purchase
👍🏻👍🏻

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nina
Inklaringskosten betalen
Reviewed in the Netherlands on December 1, 2024
Size: 8 ozStyle: Aquarium TreatmentVerified Purchase
Ik moest helaas €6,29 inklaringskosten betalen.
Product is verder prima!

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API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle

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About this item

Frequently bought together

Frequently purchased items with fast delivery

From the manufacturer

It’s Smart To Be Proactive!

How Do I Maintain A Healthy Environment?

How Do I Take Good Care Of My Aquarium & Fish?

Feed Your Fish Daily

Test Water Quality Weekly

Change 25% Water Every 2 Weeks

Restore Your Ecosystem Monthly

Making A Better Underwater World

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Product Description

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Top Brand: API

Important information

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Ingredients

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Cheap insurance to have beautiful and healthy fish!

Top reviews from the United States

There was a problem filtering reviews. Please reload the page.

Cheap insurance to have beautiful and healthy fish!

Images in this review

Great Product - but

Images in this review

Top reviews from other countries

5.0 out of 5 stars Effective, but Tiny Bottle

5.0 out of 5 stars Excelente Producto

5.0 out of 5 stars I WILL CONTINUE TO BUY!!

5.0 out of 5 stars 👍🏻

4.0 out of 5 stars Inklaringskosten betalen

Effective, but Tiny Bottle

Excelente Producto

I WILL CONTINUE TO BUY!!

👍🏻

Inklaringskosten betalen