--- product_id: 86816289 title: "Blagdon Extra Strength Concentrated Formula Anti Fungus & Bacteria Water Treatment for Pond Fish, Finrot, Mouthrot, Goldfish, Koi, Carp, 250 ml" brand: "blagdon" price: "¥5205" currency: JPY in_stock: true reviews_count: 8 category: "Blagdon" url: https://www.desertcart.jp/products/86816289-blagdon-extra-strength-concentrated-formula-anti-fungus-and-bacteria-water store_origin: JP region: Japan --- # Concentrated 250ml formula Wildlife-safe & fish-friendly Precise no-mess dosing chamber Blagdon Extra Strength Concentrated Formula Anti Fungus & Bacteria Water Treatment for Pond Fish, Finrot, Mouthrot, Goldfish, Koi, Carp, 250 ml **Brand:** blagdon **Price:** ¥5205 **Availability:** ✅ In Stock ## Summary > 💦 Keep your pond pristine and your fish thriving — because your aquatic friends deserve the best! ## Quick Answers - **What is this?** Blagdon Extra Strength Concentrated Formula Anti Fungus & Bacteria Water Treatment for Pond Fish, Finrot, Mouthrot, Goldfish, Koi, Carp, 250 ml by blagdon - **How much does it cost?** ¥5205 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/86816289-blagdon-extra-strength-concentrated-formula-anti-fungus-and-bacteria-water) ## Best For - blagdon enthusiasts ## Why This Product - Trusted blagdon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Stepwise Safe Dosage:** Gradual 5-day treatment builds effective dosage without stressing your aquatic ecosystem. - • **Fast Visible Recovery:** Expect temporary pond water discoloration as a sign of active healing in your fish. - • **Easy & Accurate Application:** Innovative dosing chamber eliminates guesswork and mess for professional-grade care. - • **Wildlife-Friendly Treatment:** Safe for all pond fish and local wildlife, ensuring harmony in your pond community. - • **Powerful Concentrated Formula:** Treats fungal & bacterial infections in koi, goldfish & carp with clinical precision. ## Overview Blagdon Extra Strength Concentrated Formula is a 250ml liquid treatment expertly designed to combat fungal and bacterial infections like finrot and mouthrot in pond fish such as goldfish, koi, and carp. Its wildlife-safe formula is administered over five days using a precise dosing chamber, ensuring effective, mess-free application. Trusted by over a thousand users with a 4.5-star rating, it promotes rapid fish recovery while maintaining pond ecosystem balance. ## Description From the manufacturer Why does this happen and how do I prevent it? What does fish fungal infection look like? Blood streaked fins Frayed, tattered, ragged, split and 'fluffy' fins Head and mouth regions eroded or rotting covered with white cotton wool like growths Off white cotton-wool like tufts develop around the mouth fins and on the body What are the fish doing? Clamped fins Motionless 'sulking' and appearing lethargic Not eating, lack of appetite, becoming thin or emaciated What should I do? Treat with Blagdon Anti Fungus & Bacteria Increase aeration, this is always important when using any treatment or medication Support fish with Pond Guardian Pond Salt to help their immune system Test water for irregularities and treat accordingly Look for signs of aggression in the fish community which may have caused the damage opening the way for fungal infection Consider a course of Stress Away as a preventative to help fish cover after treatment Why does a fungal infection happen? Good water quality is key Disease causing bacteria and fungus are present in every pond environment (although specific species may be introduced by new fish or wildlife) but will rarely cause a problem with good water quality and happy healthy fish. Avoiding stress and keeping good water quality and low levels of waste/sludge in your pond is key to avoiding and treating fish infections. Test your water for abnormalities in ammonia, nitrate, nitrite, pH and correct if necessary. Fungus and Finrot are often secondary infections of wounds on the fins or skin caused by aggression from other fish in the pond damage caused by handling e.g. netting fish parasite infections cause skin irritation on the fish causing them to scratch and flick resulting in abrasions It is important to treat at the first sign of illness to give the fish the best chance of recovery from any illness or infection How do I prevent it? Complete regular maintenance to keep the pond clean and healthy Support fish health with Pond Tonic Salt to alleviate stress and recovery during/after treatment Regularly test water for abnormalities Consider a quarantine before introducing new fish to an established community Prevent pollutants such as garden chemicals and pesticides entering the water Be aware of wildlife contaminants entering the water during heavy rainfall run off Review: Good - Very good working ok Review: Good - It works just great ## Features - EFFECTIVE CONCENTRATED FORMULA -use for treating goldfish, koi and carp pond fish for fungal and external bacterial infections such as: cotton wool fungus, fin rot and mouth rot fungus - SAFE DOSAGE LEVELS - this treatment is designed to be added over a 5-day period to build up dosage levels for best results - WILDLIFE SAFE - Blagdon Anti-Fungus and Bacteria Treatment is safe for treating all goldfish, koi and carp and is also safe for wildlife - SHAKE BOTTLE WELL - shaking the bottle well before ensures the active ingredients are mixed correctly for best results for a fast fish recovery time (treat at first signs of infection). Discolouration of your pond water should be expected, but this only lasts for a few hours! - ACCURATE NO MESS DOSING CHAMBER - just calculate the amount required for your pond, squeeze the required amount into the dosing chamber and administer according to instructions on bottle (this bottle treats 2,273 litres over the 5 day period) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0714JQ2JD | | Allergen Information | Allergen-Free | | Best Sellers Rank | 5,287 in Garden ( See Top 100 in Garden ) 38 in Water Garden & Pond Treatment | | Brand | Blagdon | | Brand Name | Blagdon | | Country Of Origin | United Kingdom | | Customer Reviews | 4.5 out of 5 stars 1,096 Reviews | | Global Trade Identification Number | 00755349028085 | | Included Components | 1 bottle of treatment | | Item Form | Liquid | | Item Type Name | Pond Fish Treatment | | Item form | Liquid | | Liquid Volume | 250 Millilitres | | Liquid volume | 250 Millilitres | | Manufacturer | Blagdon | | Manufacturer Part Number | 2808 | | Model Number | BD2808 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 755349027033 755349028085 | | Unit Count | 250.0 millilitre | | Unit count | 250.0 millilitre | ## Product Details - **Brand:** Blagdon - **Liquid volume:** 250 Millilitres - **Item form:** Liquid - **Manufacturer:** Blagdon - **UPC:** 755349027033 755349028085 ## Images ![Blagdon Extra Strength Concentrated Formula Anti Fungus & Bacteria Water Treatment for Pond Fish, Finrot, Mouthrot, Goldfish, Koi, Carp, 250 ml - Image 1](https://m.media-amazon.com/images/I/61nrspnXIdL.jpg) ## Available Options This product comes in different **Colour Name, Size Name** options. ## Questions & Answers **Q: Green fungis on koi carp how to treat it?** A: Hi Not had green fungus. White/Grey treated okay with this treatment. It treats many fish problems. **Q: Great product, fish are looking happier already but it seems to have stained the rocks on my cascade below the waterline. Is there a way to fix this?** A: The blue is harmless and it will fade over time **Q: Does the label show the ingredients? Please? Thanks.** A: I had a look for you i just me metions 3 active ingredients. It might be worth checking out there website. **Q: What temperature does the pond have to be for it to work** A: It can be used at low temperatures but at lower temperatures it can take longer to take effect. As with all treatments it is recommended to make sure that the pond has good aeration throughout a course of treatment. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by C***G on 8 May 2026* Very good working ok ### ⭐⭐⭐⭐⭐ Good *by J***M on 20 June 2026* It works just great ### ⭐⭐⭐⭐ Worked well, but dyes everything *by M***N on 7 June 2026* Needed to treat my fish after some new additions. It does work well, but turns the water a vivid green colour, and should you have any air lines etc in your pond it will dye them. Remember that this treatment takes several days of adding, so just when the water starts to clear you turn it vivid green again. Fish are now healthy, and as it was on offer it was cheaper than local aquatic stores. It wont do anything to control Algae and please read the full instructions and warning on the bottle as its not suitable for all fish. A good sized bottle will allow me to do a second complete treatment should it be required. ## Frequently Bought Together - Blagdon Extra Strength Concentrated Formula Anti Fungus & Bacteria Water Treatment for Pond Fish, Finrot, Mouthrot, Goldfish, Koi, Carp, 250 ml - Blagdon Guardian Pond Tonic Salt, for Fish Health, Water Quality, General Tonic, pH Buffer, 2.27kg, treats 2,273 litres - Blagdon Anti-Ulcer Treatment for Pond Fish, Effective, Unique Formulation, Treats Ulcers, Bacterial Gill Disease & Dropsy, 500 ml --- ## 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.jp/products/86816289-blagdon-extra-strength-concentrated-formula-anti-fungus-and-bacteria-water](https://www.desertcart.jp/products/86816289-blagdon-extra-strength-concentrated-formula-anti-fungus-and-bacteria-water) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-20*