--- product_id: 259309832 title: "#37344 Methylene Blue-General Disease Prevention Tre" brand: "kordon" price: "€ 29.04" currency: EUR in_stock: true reviews_count: 5 category: "Kordon" url: https://www.desertcart.fr/products/259309832-37344-methylene-blue-general-disease-prevention-tre store_origin: FR region: France --- # Covers 50+ liters per drop 4 fl oz potent liquid Trusted disease prevention #37344 Methylene Blue-General Disease Prevention Tre **Brand:** kordon **Price:** € 29.04 **Availability:** ✅ In Stock ## Summary > 🛡️ Keep your fish thriving—because your aquarium deserves the best defense! ## Quick Answers - **What is this?** #37344 Methylene Blue-General Disease Prevention Tre by kordon - **How much does it cost?** € 29.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/259309832-37344-methylene-blue-general-disease-prevention-tre) ## Best For - kordon enthusiasts ## Why This Product - Trusted kordon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Odor-Free & Safe:** Keep your aquatic environment fresh and stress-free for your fish with a clean, odorless treatment. - • **Compact & Efficient:** 4 fluid ounces of powerful liquid treatment fits perfectly in your maintenance kit without clutter. - • **Trusted by Thousands:** Join 3,600+ satisfied users who rate it 4.7 stars for reliable fish disease prevention. - • **Proven Brand Excellence:** Kordon’s legacy in aquarium care ensures your fish get premium protection every time. - • **Ultra-Concentrated Formula:** Just a drop treats over 50 liters—maximize your aquarium’s health with minimal effort. ## Overview Kordon #37344 Methylene Blue is a 4-ounce liquid aquarium treatment designed for general disease prevention. Highly concentrated, it treats over 50 liters per drop, is odor-free, and trusted by thousands of fish enthusiasts for maintaining healthy aquatic environments. ## Description KORDON #37344 Methylene Blue-General Disease Prevention Treatment for Aquarium, 4-Ounce, Review: Stupid bottlecap design - stupid bottle cap design and now, it is fused together and i cant open it. This is after not using it for awhile I dont understand why they do something so stupid. Just use a normal cap for gods sakes Review: Rinde mucho y es muy bueno - Muy bueno, con menos de una gota de cubren 50 litros ## Features - manufacturer: Kordon - Item Trademark: KORDON - Item Weight: ounces, pounds, 0.5000, 8. - Item Category: Aquarium Pond Water Treatment ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00025646W | | Allergen Information | Odor-Free | | Best Sellers Rank | #19,174 in Pet Supplies ( See Top 100 in Pet Supplies ) #147 in Fish Medication & Health Supplies | | Brand | Kordon | | Brand Name | Kordon | | Customer Reviews | 4.7 out of 5 stars 3,648 Reviews | | Global Trade Identification Number | 00048054373442 | | Included Components | KORDON #37344 Methylene Blue-General Disease Prevention Treatment for Aquarium, 4-Ounce, | | Item Form | Liquid | | Item Type Name | KORDON # 37344 METHYLENE BLUE 4 OZ | | Item Weight | 4 Ounces | | Item form | Liquid | | Item weight | 4 Ounces | | Liquid Volume | 4 Fluid Ounces | | Liquid volume | 4 Fluid Ounces | | Manufacturer | Kordon | | Manufacturer Part Number | 048054373442 | | Model Number | MODEL-37344 | | Pet Type | Fish | | Target Species | Fish | | UPC | 048054373442 | | Unit Count | 4 Milliliters | | Unit count | 4 Milliliters | ## Product Details - **Brand:** Kordon - **Item form:** Liquid - **Item weight:** 4 Ounces - **Liquid volume:** 4 Fluid Ounces - **Unit count:** 4 Milliliters ## Images ![#37344 Methylene Blue-General Disease Prevention Tre - Image 1](https://m.media-amazon.com/images/I/61Ueqt3BcYL.jpg) ## Questions & Answers **Q: Has anyone used this for fin rot and does it work well?** A: Use a few drops of this with a tsp of Epson salt per gallon and your fishy will heal. The methylene blue will stick to wound to provide oxygen to promote healing. Change 1/3 of the water per week. **Q: Is this solution good for microscope labs?** A: heck yeah! **Q: Can someone tell me if there are any additional ingredients ( preservatives,food colorings,additives,etc.) in this product?** A: label does not list any addl ingredients. Does state for aquarium fish use only. Not for human or food fish use. **Q: How much do you use per gal?** A: Please aquarium use, please follow the directions on the bottle, which says 1 tsp in 10 gallons produces a 3ppm solution. For 1 gallon, one tenth of a teaspoon is 0.5 mL, or about 10 drops. For other uses, please be aware that this is not a 1% solution. The manufacturer states that this is a 2.303% solution. This means that each drop contains 1.15mg (not 0.5mg). ## Customer Reviews ### ⭐ Stupid bottlecap design *by K***E on 17 April 2026* stupid bottle cap design and now, it is fused together and i cant open it. This is after not using it for awhile I dont understand why they do something so stupid. Just use a normal cap for gods sakes ### ⭐⭐⭐⭐⭐ Rinde mucho y es muy bueno *by D***A on 4 December 2019* Muy bueno, con menos de una gota de cubren 50 litros ### ⭐⭐⭐⭐⭐ thanks it was very usefull *by C***D on 17 November 2016* I have used this product to breed discus fish and it was very useful. I would recommend this item for sure ## Frequently Bought Together - Kordon Methylene Blue Disease Preventative – Safe for Freshwater & Saltwater Aquariums, Prevents Fungal Infections & Treats Parasites, Reduces Fish Stress, 4-Ounces - Kanaplex, 5 g(0.18 oz) - API AQUARIUM SALT Freshwater Aquarium Salt 36-Ounce Box --- ## 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.fr/products/259309832-37344-methylene-blue-general-disease-prevention-tre](https://www.desertcart.fr/products/259309832-37344-methylene-blue-general-disease-prevention-tre) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-08-15*