---
product_id: 137866689
title: "#37344 Methylene Blue-General Disease Prevention Treatment for Aquarium, 4-Ounce,"
brand: "kordon"
price: "6894 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "Kordon"
url: https://www.desertcart.is/products/137866689-37344-methylene-blue-general-disease-prevention-treatment-for-aquarium-4
store_origin: IS
region: Iceland
---

# 4 fl oz potent liquid formula Fights fungal infections effectively Proudly made in the USA #37344 Methylene Blue-General Disease Prevention Treatment for Aquarium, 4-Ounce,

**Brand:** kordon
**Price:** 6894 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your aquarium flawless with the ultimate fungal defense!

## Quick Answers

- **What is this?** #37344 Methylene Blue-General Disease Prevention Treatment for Aquarium, 4-Ounce, by kordon
- **How much does it cost?** 6894 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/137866689-37344-methylene-blue-general-disease-prevention-treatment-for-aquarium-4)

## 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

- • **Peace of Mind Protection:** Keep your aquatic ecosystem healthy and thriving effortlessly
- • **Precision Liquid Formula:** Easy-to-dose 4-ounce bottle for consistent aquarium care
- • **Trusted American Quality:** Manufactured by Kordon LLC, ensuring premium standards
- • **Malachite Green Alternative:** A safer, effective substitute for traditional treatments
- • **Fungus Fighter Extraordinaire:** Clinically proven to control and prevent aquarium fungal outbreaks

## Overview

Kordon's 4-ounce Methylene Blue liquid treatment offers a powerful, easy-to-use solution for preventing and controlling superficial fungal infections in aquarium fish. Made in the USA, it serves as a trusted alternative to malachite green, ensuring your aquatic pets stay healthy and vibrant.

## Description

Methylene blue is effective against superficial fungal infections of fishes. The drug may be used as an alternative to malachite green for the control of fungus.

Review: Muy bueno, con menos de una gota de cubren 50 litros
Review: I have used this product to breed discus fish and it was very useful. I would recommend this item for sure

## Features

- It is for control of fungus
- The drug may be used as an alternative to malachite green
- Methylene blue is effective against superficial fungal infections of fishes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Kordon |
| Liquid Volume | 4 Fluid Ounces |
| Item Weight | 0.02 Pounds |
| Item Form | Liquid |
| Manufacturer | KORDON LLC |
| UPC | 048054373442 |
| Global Trade Identification Number | 00048054373442 |
| Country of Origin | USA |
| Item model number | MODEL-37344 |
| Product Dimensions | 5.08 x 5.08 x 12.7 cm; 9.07 g |
| ASIN | B00025646W |

## Product Details

- **Brand:** Kordon
- **Liquid Volume:** 4 Fluid Ounces
- **Item Weight:** 0.02 Pounds
- **Item Form:** Liquid
- **Manufacturer:** KORDON LLC

## Images

![#37344 Methylene Blue-General Disease Prevention Treatment for Aquarium, 4-Ounce, - 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

### ⭐⭐⭐⭐⭐ Review
*by D***A on 4 December 2019*

Muy bueno, con menos de una gota de cubren 50 litros

### ⭐⭐⭐⭐⭐ Review
*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

### ⭐⭐⭐⭐⭐ Review
*by S***0 on 1 November 2025*

Works well great stuff

## 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

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---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-08*