--- product_id: 59430449 title: "API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle" brand: "api" price: "₩246398" currency: KRW in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.kr/products/59430449-api-tap-water-conditioner-for-aquariums-3-78-litre-bottle store_origin: KR region: South Korea --- # Safe for fresh & saltwater aquariums Neutralizes chlorine & chloramines instantly Super concentrated formula: 3ml treats 60L API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle **Brand:** api **Price:** ₩246398 **Availability:** ✅ In Stock ## Summary > 💦 Transform your tap water into a fish-friendly oasis—because your aquarium deserves the best! ## Quick Answers - **What is this?** API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle by api - **How much does it cost?** ₩246398 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/59430449-api-tap-water-conditioner-for-aquariums-3-78-litre-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 - • **Instant Tap Water Detox:** Eliminates harmful chlorine and chloramines on contact to protect your aquatic ecosystem. - • **Ultra-Concentrated Power:** Just 3ml treats 60 liters—max efficiency for long-lasting use and unbeatable value. - • **Heavy Metal Neutralization:** Detoxifies metals that silently threaten fish health, ensuring a pristine aquatic environment. - • **Trusted Legacy & Proven Results:** Backed by 50+ years of research and 24,000+ 5-star reviews—join the community of thriving aquarists. - • **Dual Fresh & Saltwater Compatibility:** Versatile formula supports all aquarium types, from tropical freshwater to vibrant reefs. ## Overview API Tap Water Conditioner is a highly concentrated 3.78L liquid formula that instantly neutralizes chlorine, chloramines, and detoxifies heavy metals in tap water, making it safe for both freshwater and saltwater aquariums. Trusted by over 24,000 users with a 4.7-star rating, it efficiently treats large volumes of water (3ml per 60L), protecting fish gills and tissue from chemical damage. Ideal for aquarium setup, water changes, and new fish introductions, this product ensures a healthy, vibrant aquatic environment with minimal effort. ## Description Product Description Good water quality is the key to a healthy, beautiful aquarium. Tap water contains chemicals, such as chlorine and chloramines, which make water safe for drinking, are highly toxic to fish. High levels of these chemicals destroy fish gill tissue, preventing the uptake of oxygen which can lead to fish death. Even low levels irritate delicate fish tissue. Tap water must be treated before adding fish to make sure fish remain healthy. API TAP WATER CONDITIONER Aquarium Water Conditioner instantly removes chlorine and neutralizes chloramines. It also detoxifies heavy metals in tap water. The formula of API TAP WATER CONDITIONER incredibly concentrated. You only need up to 3 ml to treat 60 liters of water. It's safe for all aquatic and can be used in both fresh and salt water. Use during aquarium set up, water changes and adding fish. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results. Directions Use up to 3 ml to treat 60 liters of water. Use during aquarium set up, water changes and adding fish. Box Contains Contains one (1) API TAP WATER CONDITIONER Aquarium Water Conditioner 3.78-Litre Bottle Review: It's certainly saved my calatheas, and I'll definitely keep a bottle on hand. - I actually bought this for a slightly different purpose than intended, and it's worked brilliantly. My calatheas are notoriously fussy about tap water because of the minerals and chlorine, and I was looking for a practical alternative to constantly collecting rainwater or buying distilled water. After treating my tap water with this conditioner and using it for watering my plants, I've noticed a real improvement. The brown edges that had been appearing on the leaves have become much less of an issue, and the plants generally look healthier. Of course, calatheas can be sensitive for many reasons, but improving the water quality has definitely made a noticeable difference in my case. The product is very concentrated, so only a small amount is needed each time, meaning the bottle lasts a long time. It also mixes into the water instantly, making it quick and convenient to use. I know this is marketed for aquariums, where its main job is to neutralise chlorine and chloramine to make tap water safe for fish. However, I've seen quite a few houseplant enthusiasts mention using it for sensitive plants with good results, particularly species that dislike treated tap water. Overall, it's been an unexpectedly useful product for my indoor plants. If, like me, you have calatheas or other sensitive tropical plants and struggle with hard or heavily treated tap water, this has been a simple and cost-effective solution. It's certainly saved my calatheas, and I'll definitely keep a bottle on hand. Review: Amazing stuff - This is such phenomenal value that it's untrue! I pay £6-£7 for a 120ml bottle. This works out so much cheaper, and the bottle is so big that I imagine that it will last me a year or so. The top cap isn't clearly marked with small dosages though, so it's hard to use it for small water top ups, but that's a small gripe and it's not the end of the world. This bottle treats over 35,000 litres, it instantly removes chlorine, neutralise chloramines and detoxifies heavy metals in tap water, which can kill the fish in high enough doses. The only bad thing I can say for this is that it does create ammonia, as it converts the chlorine to ammonia and that's how it makes it safe, but that's a small trade off for safe fish and water changes. I really couldn't recommend this stuff enough, I have been using it for years now, I don't even remember a time when I didn't use it. It's very cheap on here, lasts forever and it does the job perfectly. Excellent product. Tip: Use the cap off the smaller 120ml bottles to put on this big one. It will allow you to drip it in rather than using the very inaccurate measurement top that comes with it, as the mesurements don't go down low enough for even my 400l tank. The old lids let you count drops which is much easier. If you don't have one, get yourself one! It will make your life much easier. I think even the tiny sample bottles use the same size dripper cap which you can get at pets at home for a few pounds. ## Features - Causes serious eye irritation. - Causes skin irritation. - May cause an allergic skin reaction. - May cause respiratory irritation. - Very toxic to aquatic life. - Contains one (1) API TAP WATER CONDITIONER Aquarium Water Conditioner 3.78-Liter Bottle - Neutralizes chlorine, chloramines and other chemicals to make tap water safe for fish - Prevents tap water chemicals from causing gill destruction, tissue irritation and fish death - Super strength, high concentration formula - Use when adding or changing water and when adding new fish to freshwater and saltwater aquariums ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001EWFUSK | | Best Sellers Rank | 1,589 in Pet Supplies ( See Top 100 in Pet Supplies ) 10 in Aquarium Water Treatments | | Brand | API | | Brand Name | API | | Country Of Origin | USA | | Customer Reviews | 4.7 out of 5 stars 24,857 Reviews | | Global Trade Identification Number | 00017163004523 | | Item Form | Liquid | | Item Weight | 2.27 kg | | Item form | Liquid | | Item weight | 2.27 kg | | Liquid Volume | 3.78 Litres | | Liquid volume | 3.78 Litres | | Manufacturer | API | | Manufacturer Part Number | 52D | | Model Number | 52D | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 017163004523 | | Unit Count | 1 count | | Unit count | 1 count | ## Product Details - **Brand:** API - **Item form:** Liquid - **Item weight:** 2.27 kg - **Liquid volume:** 3.78 Litres - **Manufacturer:** API ## Images ![API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle - Image 1](https://m.media-amazon.com/images/I/61trdEJd13L.jpg) ![API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle - Image 2](https://m.media-amazon.com/images/I/A19gs7-nKkL.jpg) ![API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle - Image 3](https://m.media-amazon.com/images/I/91tF5phHmML.jpg) ![API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle - Image 4](https://m.media-amazon.com/images/I/81iVo6O1YJL.jpg) ![API Tap Water Conditioner for Aquariums, 3.78 Litre Bottle - Image 5](https://m.media-amazon.com/images/I/610ynuNy9EL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: what is the difference between this and stress coat +? Can these 2 products be used together ?** A: Tapwater conditioner contains different ingredients to strees coat, as stated by API's material safety data sheet on thier website (pretty sure I can't add the links here)... Tap water conditioner as stated by API's material safety data sheet on thier website contains Sodium Thiosulfate and EDTA Tetrasodium Salt. the Sodium Thiosulfate removes Chorine and Chloramine , and detoxifies Ag (Silver) the EDTA Tetrasodium Salt detoxifies Pb (Lead), Cu (Copper) and Zn (Zinc). Stress coat plus, and pond stress coat's only active ingredient seems to be aloevera..... ## Customer Reviews ### ⭐⭐⭐⭐⭐ It's certainly saved my calatheas, and I'll definitely keep a bottle on hand. *by F***R on 23 July 2026* I actually bought this for a slightly different purpose than intended, and it's worked brilliantly. My calatheas are notoriously fussy about tap water because of the minerals and chlorine, and I was looking for a practical alternative to constantly collecting rainwater or buying distilled water. After treating my tap water with this conditioner and using it for watering my plants, I've noticed a real improvement. The brown edges that had been appearing on the leaves have become much less of an issue, and the plants generally look healthier. Of course, calatheas can be sensitive for many reasons, but improving the water quality has definitely made a noticeable difference in my case. The product is very concentrated, so only a small amount is needed each time, meaning the bottle lasts a long time. It also mixes into the water instantly, making it quick and convenient to use. I know this is marketed for aquariums, where its main job is to neutralise chlorine and chloramine to make tap water safe for fish. However, I've seen quite a few houseplant enthusiasts mention using it for sensitive plants with good results, particularly species that dislike treated tap water. Overall, it's been an unexpectedly useful product for my indoor plants. If, like me, you have calatheas or other sensitive tropical plants and struggle with hard or heavily treated tap water, this has been a simple and cost-effective solution. It's certainly saved my calatheas, and I'll definitely keep a bottle on hand. ### ⭐⭐⭐⭐⭐ Amazing stuff *by A***E on 14 June 2016* This is such phenomenal value that it's untrue! I pay £6-£7 for a 120ml bottle. This works out so much cheaper, and the bottle is so big that I imagine that it will last me a year or so. The top cap isn't clearly marked with small dosages though, so it's hard to use it for small water top ups, but that's a small gripe and it's not the end of the world. This bottle treats over 35,000 litres, it instantly removes chlorine, neutralise chloramines and detoxifies heavy metals in tap water, which can kill the fish in high enough doses. The only bad thing I can say for this is that it does create ammonia, as it converts the chlorine to ammonia and that's how it makes it safe, but that's a small trade off for safe fish and water changes. I really couldn't recommend this stuff enough, I have been using it for years now, I don't even remember a time when I didn't use it. It's very cheap on here, lasts forever and it does the job perfectly. Excellent product. Tip: Use the cap off the smaller 120ml bottles to put on this big one. It will allow you to drip it in rather than using the very inaccurate measurement top that comes with it, as the mesurements don't go down low enough for even my 400l tank. The old lids let you count drops which is much easier. If you don't have one, get yourself one! It will make your life much easier. I think even the tiny sample bottles use the same size dripper cap which you can get at pets at home for a few pounds. ### ⭐⭐⭐⭐⭐ Easy instructions but use your phone to zoom in on small writing *by D***W on 2 June 2026* Fish are loving it. Simple to follow instructions if a little small to read. We just took a photo with the phone and zoomed in. Helps the fish when we have to do a water change for them as we live in a very hard water area ## Frequently Bought Together - API TAP Water Conditioner Aquarium Water Conditioner 1-Gallon Bottle - API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 32-Ounce Bottle - API STRESS COAT Aquarium Water Conditioner 1-Gallon Bottle, Model Number: 317163100851 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/59430449-api-tap-water-conditioner-for-aquariums-3-78-litre-bottle](https://www.desertcart.kr/products/59430449-api-tap-water-conditioner-for-aquariums-3-78-litre-bottle) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-10*