--- product_id: 742968436 title: "API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle" brand: "api" price: "A$20" currency: AUD in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.com.au/products/742968436-api-stress-coat-aquarium-water-conditioner-16-ounce-bottle store_origin: AU region: Australia --- # Aloe Vera heals & restores fish slime coat Instantly neutralizes chlorine & chloramines Reduces fish stress by 40% scientifically API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle **Brand:** api **Price:** A$20 **Availability:** βœ… In Stock ## Summary > πŸ’§ Transform your tank into a stress-free aquatic sanctuary! ## Quick Answers - **What is this?** API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle by api - **How much does it cost?** A$20 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/742968436-api-stress-coat-aquarium-water-conditioner-16-ounce-bottle) ## Best For - api enthusiasts ## Why This Product - Trusted api brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safe Water, Happy Fish:** Removes harmful chemicals like chlorine, chloramines, and heavy metals instantly for a toxin-free aquatic environment. - β€’ **Versatile & Easy to Use:** Perfect for water changes, new fish introductions, or treating sick/injured fish with simple dosing instructions. - β€’ **Healing Power of Aloe Vera:** Replaces and repairs the natural protective slime coat damaged by handling, shipping, or fish fighting, promoting tissue regeneration. - β€’ **Scientifically Proven Stress Relief:** Reduces fish stress by 40%, ensuring vibrant, active, and healthier fish after water changes or new additions. - β€’ **Trusted by Professionals for 60 Years:** API’s premium formula is a go-to for aquarium enthusiasts and experts alike, ensuring a thriving freshwater habitat. ## Overview API STRESS COAT is a 16-ounce liquid aquarium water conditioner that instantly neutralizes harmful tap water chemicals like chlorine and chloramines. Enriched with Aloe Vera, it restores the natural slime coat of fish, reducing stress by 40% and promoting healing of damaged skin and fins. Trusted by professionals for nearly 60 years, it’s essential for maintaining a healthy, vibrant freshwater aquarium during water changes, new fish introductions, or when fish are injured or stressed. ## 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. Review: Helpful for houseplants - Really good stuff. I use it in the tap water I give my houseplants, and they are thriving! Review: 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. desertcart is honest and prints both the good and the bad reviews. I bought the following products from desertcart: >*****> 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 desertcart 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 desertcart ( including the aquatics people at Petco ). // ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000255MZG | | ASIN | B000255MZG | | Allergen Information | Apple Free | | Best Sellers Rank | #818 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 (38,244) | | Date First Available | June 15, 2004 | | Department | Unisex-Adult | | Global Trade Identification Number | 00317163050859 | | Is Discontinued By Manufacturer | Yes | | Item Form | Liquid | | Item Type Name | Aquarium Water Conditioner | | Item Weight | 6.4 ounces | | Item model number | 85C | | Liquid Volume | 0.48 Liters | | Manufacturer | Mars Fishcare | | Manufacturer | Mars Fishcare | | Manufacturer Part Number | 85C | | Model Number | 85C | | Pet Type | Fish | | Product Dimensions | 5 x 1 x 5 inches; 6.4 ounces | | Target Species | Fish | | UPC | 317163050859 | | Unit Count | 16 Ounce | ## Product Details - **Brand:** API - **Item Form:** Liquid - **Item Weight:** 6.4 ounces - **Liquid Volume:** 0.48 Liters - **Number of Packs:** 1 ## Images ![API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle - Image 1](https://m.media-amazon.com/images/I/515S6+fDLmL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: can I use this with my live plant tank? will it bad for the live plant?** A: People are using this to treat tap water before watering plants so with that being, yes I think it's safe for live plant tanks. **Q: Does this clean the water right away so i can add fish right after or wait for it to settle** A: It treats the water instantly, but if this is a brand new tank, please read up about cycling your tank... I don't want your fish to die if you just set up a brand new tank and are adding fish right away. **Q: Do you have to treat the water and then put it in the tank or can you do water change and then immediately add this stuff? I've been adding water and then this stuff rigth after in the tank??! Also- directions don't sepcify do you use enough ML of this stuff to treat all water in your tank or just amount of new water b…** A: You should add stress coat to the water BEFORE you add it to the tank, in a bucket. The correct dosage is 1/2 a ml per gallon so for 4 gallons you would need 2 ml. You can safely double or triple the dose to replace slime coat or for fin regrowth. You only treat the water you are adding (separately before you add it), there is no reason to treat water you have already treated. So yes you would just add conditioner to the 4 gallons you are replacing. But of course when you first start your tank you must add conditioner to all the water (before you add your fish) because that would be straight tap water that has never been conditioned. This is great stuff. Hope this helps. **Q: How often are you supposed to use this product?** A: I use this product every time I change the water in my fish tank, whether it's partial changes or full water changes. But the beauty of this product is how little of it you have to use (2mL conditions 2 gal). ## Customer Reviews ### ⭐⭐⭐⭐⭐ Helpful for houseplants *by B***E on April 17, 2026* Really good stuff. I use it in the tap water I give my houseplants, and they are thriving! ### ⭐⭐⭐⭐⭐ All API products are good. Stress Coat is a miracle medicine. *by M***A on December 15, 2012* 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 ). // ### ⭐⭐⭐⭐⭐ Super Value Of Great Product *by S***E on August 16, 2025* 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 . ## Frequently Bought Together - API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle - API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle - API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 16-Ounce Bottle --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.au/products/742968436-api-stress-coat-aquarium-water-conditioner-16-ounce-bottle](https://www.desertcart.com.au/products/742968436-api-stress-coat-aquarium-water-conditioner-16-ounce-bottle) --- *Product available on Desertcart Australia* *Store origin: AU* *Last updated: 2026-05-03*