








💧 Heal, Protect & Thrive: The Ultimate Stress Shield for Your Aquarium
API STRESS COAT Aquarium Water Conditioner is a scientifically formulated 1-ounce treatment that instantly detoxifies tap water by removing chlorine, chloramines, and heavy metals. Enriched with aloe vera, it reduces fish stress by 40% and repairs damaged tissue by restoring the natural slime coat. Ideal for all freshwater aquariums, it supports fish health during water changes, new fish introductions, and recovery from injury, making it a professional-grade solution trusted for over 50 years.













| ASIN | B0002AQLN8 |
| ASIN | B0002AQLN8 |
| Allergen Information | Apple Free |
| Best Sellers Rank | #825 in Pet Supplies ( See Top 100 in Pet Supplies ) #3 in Aquarium Water Treatments |
| Brand Name | API |
| Customer Reviews | 4.8 4.8 out of 5 stars (38,084) |
| Date First Available | August 3, 2004 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00317163010853 |
| Is Discontinued By Manufacturer | Yes |
| Item Form | Liquid |
| Item Type Name | Aquarium Water Conditioner |
| Item Weight | 41.13 Grams |
| Item model number | 85G |
| Liquid Volume | 1 Fluid Ounces |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 85G |
| Model Number | 85G |
| Product Dimensions | 5 x 1 x 5 inches; 1.45 ounces |
| Target Species | Fish |
| UPC | 317163010853 |
| Unit Count | 1 Count |
M**A
All API products are good. Stress Coat is a miracle medicine.
I add API Stress Coat to all new water before it goes into my aquarium. I also add a enough hot water to make it the same temperature as the aquarium. Add an extra dose when add fish. Add an extra dose whenever fish appear ill or stressed. It truly is an first-resort, miracle medicine for fish. THE FOLLOWING REVIEWS ARE FOR ALL OF MY AQUATIC PURCHASES. I always read two dozen or more User Reviews for any product I buy. Amazon is honest and prints both the good and the bad reviews. I bought the following products from Amazon: >*****> Hagen Marina Ecoscaper Hydrocotyle Silk Plant. I am really pleased with this plant. And the fish like it too . . . no rough edges. It is just as pictured and looks so realistic. >*****> Hagen Exo Terra Water PLANT, Duckweed. It looks and floats just like real duckweed ! I showed it to the aquatics people at Petco and they were impressed. >*****> Hydor Theo Submersible Aquarium HEATER 25W UL. Very small and easy to adjust; plus it can be placed completely underwater in any position: vertical, horizontal, or on an angle. >*****> Hagen Elite Underwater Mini FILTER for up to 3 gallon tank. >*****> Hagen Elite Mini Internal FOAM 5 PACK replacement sponges. This is an excellent filter for my 5 gallon tank. It is well-made and powerful and could filter a 10 gallon tank. To reduce the water current to make it easy on my fish, I TOOK THE ADVICE FROM A USER REVIEW and bought a 5-pack of replacement sponge filters and used one sponge to completely cover the outflow valve. I also put a wee bit of the foam filter in the Venturi diffuser aerator. I set the aerator to low, which still provides ample aeration. I set the green filter power dial on the side of the filter to low to be just enough to create a good supply of aerating bubbles. I operated the aquarium for over a month without fish so that the water would be biologically perfect for them. Petco checks water samples for free. That little $9 dollar bio filter is just a wonder and so easy to maintain. Unplug the filter and remove it from the aquarium, then syphon off some aquarium water ( never use tap water) and squeeze the foam sponge in clean aquarium water three times or more until the final wash water is almost clear, then replace the sponge in the filter. I now have 5 Von Rio "Flame" Tetras doing very well in their new home. They do best when in a group of 5 or more, and in a low light environment, so I must have low-light live plants. I have a well-planted 5 gallon corner-type aquarium with a lid just for these 5 beautiful and hardy little orange fish. To provide shelter, there are lots of live Java ferns and wisteria plants at each end, plus the hydrocotyle silk plant to hide the filter and heater, and the plastic floating duckweed to provide shelter from above. I purchased the silk hydrocotyle and plastic duckweed, because these live plants would perish in low light. Fish, like all living creatures, need shelter from real or perceived threats. Stress is the cause of most of life's mental and physical illnesses. For many years, I have purchased almost every type of product from Amazon and never had a problem. Products are as advertised, or better, and Super Saver Shipping is fast and dependable. I recommended all of the above products to my friends. I tell everyone to save money and buy through Amazon ( including the aquatics people at Petco ). //
T**E
Magic in a Bottle for Your Aquarium!
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.
S**E
Super Value Of Great Product
I've been using this stuff for years and I usually buy local but I saw the price , already had something in my cart so I added it to save me a trip to the pet big box store . I thought I was getting the usual small bottle and when it arrived and it was 16oz I immediately thought there was a mistake . I went back and looked and it was correct . I usually get 4oz for the same price (unless on sale) locally (big box per store) and I didn't have to fight mall traffic only to search forever for a parking spot . When starting a new setup , doing a partial water change , or just adding water this stuff is a must . I add 1 gallon at a time to my 50 gallon tank and the 1 gallon mark doesn't exist but I measured out the correct amount the first few times and now just approximate it using the cap to just about double what 1 gallon calls for . It works instantly , unlike some others , so I can do the needed addition at my convenience and the fish don't seem to mind the fresh water going into the tank . No color , no change in chemical and biological balances and no smell . If you've got a fresh water tank you need this stuff .
E**E
Regular water conditioner + Aloe, easy to dose!
Just a regular water conditioner, doesnt help lower nitrates, nitrites or ammonia, or anything magical to prevent bad bacteria as its soposed to be used in water changes that do that. It pretty much does everything as advertised, plus some aloe Vera that promotes natural healing, kinda like a slimy bandaid. It's extremely easy to dose, nice big bottle will last me a while! Happy I ordered. Reccomend if you are just looking for a basic water conditioner.
C**E
Nice product
It looks to work well. I see some bubbles in the water surface after using this product, but it may not be a real issue.
J**T
Calmed my stressed goldfish!
After getting a new aquarium, my fish were acting pretty stressed and they didn’t seem to be calming down even after a few days so I decided to try this. They seem much calmer and happier and I feel good about helping them repair their slime coats which I think were a little messed up from the transfer.
S**M
A must for fresh water fish
I always have this ready when adding fresh water to my tanks . Better price online
T**G
Excellent aquarium conditioner…..and for removing metals / chemicals from water for houseplants!
I have been using this for my aquariums for decades now. I love the stuff. But then, an epiphany! It is also wonderful for removing chlorine and chemicals from the water I use for my houseplants. Some of my plants are very sensitive to all the junk they put into city water. Once I started using this in my water, my plants began to thrive like no one’s business. Big, beautiful and green! Highly recommend!
R**E
Es un producto muy bueno para quitar cloro, cloraminas y metales pesados además de quitar el stress de los peces.
N**N
My fishes were stressed (staying at one place in bottom) and this liquid helped to get back to normal state. Note: You need to identify root cause why fish is stressed in addition to using it. In my case, they were stressed due to kids and turning on light in mid night.
M**R
Muy buen producto, ayuda en la regeneración de escamas, y en general en la salud de los betas si sufrieron alguna lesión. Super recomendado!
S**K
Lasts forever
S**H
Love it use it every time I put water in the rank n fish r healthy . N growing . Amazing price compare to pet store u pay twice as much n as mallet bottle . Was surprised on the size outlet I got . Thank u