--- product_id: 67654764 title: "API Melafix Freshwater Fish Bacterial Infection Remedy, 1.87 Litre Bottle" brand: "api" price: "€ 119.18" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.sk/products/67654764-api-melafix-freshwater-fish-bacterial-infection-remedy-1-87-litre store_origin: SK region: Slovakia --- # Natural tea tree extract 1.87L potent liquid formula Prevents & heals bacterial infections API Melafix Freshwater Fish Bacterial Infection Remedy, 1.87 Litre Bottle **Brand:** api **Price:** € 119.18 **Availability:** ✅ In Stock ## Summary > 🛡️ Keep your aquatic friends thriving with nature’s healing touch! ## Quick Answers - **What is this?** API Melafix Freshwater Fish Bacterial Infection Remedy, 1.87 Litre Bottle by api - **How much does it cost?** € 119.18 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/67654764-api-melafix-freshwater-fish-bacterial-infection-remedy-1-87-litre) ## 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 - • **Dual Action Formula:** Heals damaged fins, ulcers, and open wounds while preventing new infections. - • **Botanical Powerhouse:** Harnesses natural tea tree extract for rapid healing and infection control. - • **Trusted by Thousands:** Top-rated with 4.5 stars from over 11,000 reviews—join the thriving aquarium community. - • **Large Volume Advantage:** Generous 1.87L bottle ensures long-lasting treatment and prevention cycles. - • **Stress-Free Introductions:** Use as a preventive for newly introduced fish to reduce disease outbreaks. ## Overview API Melafix is a 1.87L liquid remedy formulated with natural tea tree extract to effectively heal bacterial infections and repair damaged fins, ulcers, and wounds in freshwater fish. Ideal for both treatment and prevention, it supports healthy aquarium ecosystems by reducing disease risk, especially when introducing new fish. Trusted by thousands, it’s a must-have for maintaining vibrant, stress-free aquatic life. ## Description 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. 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. Feed your fish twice daily only the amount of food they can eat in 2 to 3 minutes depending on the species. Some fish such as bottom feeders and algae eaters will need up to 30 minutes to 2 hours. Overfeeding & low quality nutrition cause unconsumed food and more excrement which cloud water and raise harmful ammonia levels, possibly leading to fish loss. Take time to observe fish and the water temperature to ensure they are active & healthy. 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 5 common water quality parameters are Ammonia, Nitrite, Nitrate, and pH - 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. 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. 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. ## Features - Contains one (1) API MELAFIX Freshwater Fish Bacterial Infection Remedy 1.87-Liter Bottle - Heals bacterial infections and repairs damaged fins, ulcers and open wounds - Contains natural, botanical tea tree extract to quickly and rapidly help fish - Helps treat newly-introduced fish to reduce risk of disease outbreak in freshwater aquariums - Use daily for a week when treating infections and for 3 days as a preventive when adding new fish ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00026041M | | Best Sellers Rank | 1,790 in Pet Supplies (See Top 100 in Pet Supplies) 1 in Prescription Aquatic Animal Medications | | Brand Name | API | | Country Of Origin | USA | | Customer Reviews | 4.5 4.5 out of 5 stars (11,317) 4.5 out of 5 stars | | Global Trade Identification Number | 00317163160114 | | Item Form | Liquid | | Item Weight | 64 Ounces | | Liquid Volume | 64 Fluid Ounces | | Manufacturer | API | | Manufacturer Part Number | 11P | | Model Number | 11P | | Number Of Items | 1 | | Pet Type | Fish | | Target Species | Fish | | Unit Count | 1870.0 millilitre | | Upc | 317163160114 317163416112 | ## Product Details - **Brand:** API - **Item form:** Liquid - **Item weight:** 64 Ounces - **Liquid volume:** 64 Fluid Ounces - **Manufacturer:** API ## Images ![API Melafix Freshwater Fish Bacterial Infection Remedy, 1.87 Litre Bottle - Image 1](https://m.media-amazon.com/images/I/712Uletm11L.jpg) ## Available Options This product comes in different **Size Name, Style Name** options. ## Questions & Answers **Q: This site list melafix from two different venders, mars and pond care. big difference in priceing. are they the same?** A: I've used several different brand types of melafix and found that they work just the same. **Q: Is it safe to use post-expiration? In other words does it turn toxic to fish or simply starts to lose the effectiveness?** A: I would think if this is not very much over date, like 6months or so, it would be fine. If it is still sealed, it will be like new or almost. If it is older, it probably, hate to say as this, but I would think it will be okay to use, and just be weaker or maybe not. If you are in doubt, I would buy a new one to be certain. In the past, they never put dates on anything, and now a days they do and the things were used and were okay. Best answers I can give you. Good luck with your issues. **Q: I guess my butterfly goldfish has fin rot. How should I treat it? It is in a pond with other healthy fish.** A: If the other fish are healthy. Then you should remove it in to a isolation tank. Be sure to use the pond water when you fill it. There are instructional videos on YouTube that will show you how. **Q: How is this different from regular strength? They both have 5% concentration in a 64 oz bottle.** A: My advice is to please ask a professional breeder for direction. Off the self purchases is "gambling" to me! Best wishes to you and the Fish :) ## Customer Reviews ### ⭐⭐⭐⭐⭐ From lifeless to spring chicken - read my review and view images *by on Reviewed in the United Kingdom 12 February 2026* Our fish was showing signs of septicaemia with blood spots, scales peeling away, very lethargic, not eating and fins that looked damaged beyond repair, so after a full tank change with 24 hour settled water, all plants removed to prevent further damage from brushing past, I followed a set routine of daily treatment using this treatment, within 2 days she became more active, and obvious signs of repair were visible, blood spots were disappearing and her fins were slowly starting to move more freely. It’s been 10 days and apart from the damaged scales on her side that are still healing, she’s back to herself, swimming, begging for food every time she sees anyone, safe to say my son is super happy that he’s not got to say goodbye to pepper just yet.Can’t recommend this product enough, well worth the money, the size was plenty for what I needed, but I’ll just continue to use it bi daily for the next few weeks to ensure that it is fully treated and doesn’t come back. And because she’s eating again equivalent to a St Bernard ( if we let her ) there’s less debris in the tank so the tank has stayed clearer.Also I’ve just noted that pre treatment her back was arched and looked so poorly, today she’s back straight, able to buoyant herself easily.I have attached pictures from day 1 to day 10 to show the difference.Absolutely superb result. ### ⭐⭐⭐⭐⭐ Definitely helped my poorly fish . *by on Reviewed in the United Kingdom 18 September 2025* Bought this in hopes it would help my young Koi that just hasn’t been well since it was gifted to me 3 months ago . I had no idea what was wrong & we have no aquatic vet close by so after googling symptoms in great detail & doing some research it kept coming back as bacterial infection. I’ve had my other fish 20+ years & never had to use any chemicals in my pond or treat any of my fish ..Decided to give melafix a go & im really glad I did . I isolated him in a tank & im currently on day 6 of the treatment . He’d been bottom sitting in my pond for weeks , he’d never come up for food at feeding time & he spent 24 hours a day hiding behind my pond plants . As you can see in the video I took yesterday he’s now swimming around perfectly normal & happy , Ive been using koi flakes to feed him whilst he’s in the tank (usually use MediKoi) & it’s the first time I’ve seen him eat since he fell ill . The melafix also cleared up a red bloodshot patch he’d got underneath his body within the first dose of treatment . He’s not stopped swimming around & playing with the bubbles from the air stones 😂 I’ll be gutted when I have to put him back in the pond . I’d definitely recommend this stuff . I thought I was gonna lose my fish he was so lethargic & unwell but it took just 3 days of this stuff & I saw positive signs .Just to add , it did make the water go incredibly cloudy and my koi did start rubbing a bit against the airstones which can be a side effect to using melafix . I did a 25% water change and added 2 tablespoons spoons of pond salt , this helped with any irritation / stress . ### ⭐⭐⭐⭐⭐ Three fish saved *by on Reviewed in the United Kingdom 10 July 2026* I had three dying beta fry ,( four month old ) used this as described, and four weeks later all is well .Worked a treat .Would highly recommend, if you’re not sure what’s wrong , use this … ## Frequently Bought Together - API MELAFIX Freshwater Fish Bacterial Infection Remedy 64-Ounce Bottle - API PIMAFIX Freshwater and Saltwater Fish Remedy 64-Ounce Bottle - API AQUARIUM SALT Freshwater Aquarium Salt 67-Ounce Box (Packaging May Vary) --- ## 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.sk/products/67654764-api-melafix-freshwater-fish-bacterial-infection-remedy-1-87-litre](https://www.desertcart.sk/products/67654764-api-melafix-freshwater-fish-bacterial-infection-remedy-1-87-litre) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-22*