---
product_id: 105571583
title: "NT Labs Acriflavin 250ml"
brand: "nt labs"
price: "€ 33.49"
currency: EUR
in_stock: true
reviews_count: 13
category: "Nt Labs"
url: https://www.desertcart.de/products/105571583-nt-labs-acriflavin-250ml
store_origin: DE
region: Germany
---

# 7-day treatment cycle 250ml potent liquid formula 80mg/100ml Acriflavine neutral NT Labs Acriflavin 250ml

**Brand:** nt labs
**Price:** € 33.49
**Availability:** ✅ In Stock

## Summary

> 🛡️ Protect your prized koi with the ultimate bacterial shield!

## Quick Answers

- **What is this?** NT Labs Acriflavin 250ml by nt labs
- **How much does it cost?** € 33.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/105571583-nt-labs-acriflavin-250ml)

## Best For

- nt labs enthusiasts

## Why This Product

- Trusted nt labs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Optimized Pond Safety:** Compatible with aeration and UV filtration management for safe, effective treatment.
- • **Comprehensive Koi Care:** Effectively treats fin, tail, mouth rot, and ulcers for total pond health.
- • **Effortless Application:** Simple dosage calculation and easy surface application saves time and hassle.
- • **Trusted Industry Leader:** Backed by 40 years of koi care expertise and rave customer reviews.
- • **Powerful Antiseptic Defense:** Clinically proven 80mg/100ml Acriflavine neutral targets bacterial infections fast.

## Overview

NT Labs Acriflavin 250ml is a professional-grade antiseptic and antibacterial liquid treatment formulated with 80mg/100ml Acriflavine neutral. Designed specifically for koi ponds, it combats fin, tail, and mouth rot as well as ulcers, ensuring rapid recovery and pond health. Trusted for over 40 years, this easy-to-use solution requires a 7-day treatment cycle with simple dosage calculation, making it the go-to choice for koi enthusiasts seeking reliable, effective bacterial infection control.

## Description

Free delivery and returns on eligible orders. Buy NT Labs Acriflavin 250ml at desertcart UK.

Review: Quality treatment - One of my koi had developed a nasty infection. It's body was covered, and one fin was very red, looked as though it was rotting. And no it wasn't koi pox. Have to say after the second treatment, very nicely recovered. Throughly recommend.
Review: Excellent result - The product did what the label said it would so would recommend product.

## Features

- 【 ANTISEPTIC AND ANTI-BACTERIAL TREATMENT FOR KOI 】: Use when fish show symptoms of a bacterial infection, or as a quarantine solution before adding new fish.
- 【 TREATS FIN, TAIL & MOUTH ROT AND ULCERS 】: A powerful antiseptic, anti-bacterial treatment for mouthrot, tailrot and finrot. Acriflavin can also be used in conjunction with NT Labs Ulcer Swab and NT Labs Propolis Wound Seal for the treatment of ulcers and other open wounds.
- 【 EASY TO USE 】: To work out the required dosage for your pond, simply calculate the volume of your pond in litres (length x width x depth (in cm)/1000) or alternatively, use our Online Dosage Calculator. Mix the appropriate dosage in a clean bucket of pond water, pour evenly over the surface of the pond and leave for 7 days. Switch off UV filtration until the colour has gone from the water. Aerate the pond well during treatment. If you feel a repeat dose is necessary, check your diagnosis using the Diagnosis Tool; a different medication may be more suitable. Allow 7 days after medicating and perform a partial water change before re- treating or treating with a different medication.
- 【 EFFECTIVE ACTIVE INGREDIENTS 】: Koi Care Acriflavin contains Acriflavine neutral (80 mg/100ml). This ingredient makes it a powerful solution to treat bacterial infections in koi.
- 【 THE LEADING RANGE OF KOI CARE PRODUCTS 】: The most highly regarded range of koi products in the industry, trusted for 40 years by both trade customers and consumers alike, this range effectively cares for and protects koi in the environment in which they live. From products that treat parasitic or bacterial infections to a tap water dechlorinator, the NT Labs Koi Care range offers koi enthusiasts everything they could possibly need to keep perfect koi and an equally perfect koi pond.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002SQGNQY |
| Batteries Included | No |
| Batteries required | No |
| Colour | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (297) |
| Date First Available | 5 Jun. 2010 |
| Item Form | Liquid |
| Item Weight | 287 g |
| Item model number | NT Labs |
| Package Dimensions | 22.3 x 6.6 x 5.8 cm; 287 g |
| Pet Type | Fish and Aquatic |
| Quantity | 1 |
| Size | 250ml |
| Specific Uses | Outdoor |

## Product Details

- **Brand:** NT Labs
- **Item form:** Liquid
- **Liquid volume:** 250 Millilitres
- **Manufacturer:** NT Labs
- **UPC:** 733809002202

## Images

![NT Labs Acriflavin 250ml - Image 1](https://m.media-amazon.com/images/I/61ID6noOZyL.jpg)
![NT Labs Acriflavin 250ml - Image 2](https://m.media-amazon.com/images/I/71623FtPs6L.jpg)
![NT Labs Acriflavin 250ml - Image 3](https://m.media-amazon.com/images/I/71XonzIwn7L.jpg)
![NT Labs Acriflavin 250ml - Image 4](https://m.media-amazon.com/images/I/71gSeHDdkZL.jpg)
![NT Labs Acriflavin 250ml - Image 5](https://m.media-amazon.com/images/I/71nsKGLO+5L.jpg)

## Questions & Answers

**Q: How long is the green dye meant to last in the water i mean the colour**
A: I usually Leave it a day and then fill a glass with water from the pond. If it is clear, I turn the UV back on (it is usually clear).

**Q: Can this be used in winter?**
A: I personally do not apply any treatment if the pond water temperature is below 10 Celsius. Under the FAQ section of NT Labs Koi Care - Acriflavin it states: "The minimum "effective" water temperature when applying a treatment/medicine is 10 degrees Celsius. At lower temperatures, everything happens more slowly. Below this temperature treatments may be less effective. Please note that ALL fish keepers have a duty of care to the fish and it may be necessary to treat anyway."

**Q: Can this be used same time as fmg please?**
A: Not sure what FMG is? But it's not recommended to use anything else at the same time

**Q: How much do i use in 100 gallons**
A: You need to use 10 ml of product t 80 imp gallons.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality treatment
*by A***R on 19 October 2025*

One of my koi had developed a nasty infection. It's body was covered, and one fin was very red, looked as though it was rotting. And no it wasn't koi pox. Have to say after the second treatment, very nicely recovered. Throughly recommend.

### ⭐⭐⭐⭐⭐ Excellent result
*by R***M on 12 August 2024*

The product did what the label said it would so would recommend product.

### ⭐⭐⭐⭐ May be will take longer time to work
*by H***S on 20 January 2026*

Take time to work so far I used it twice in my pond but did not see any signs of treatment is working or not the fish still the same no signs of improvement.

## Frequently Bought Together

- NT Labs Acriflavin 250ml
- NT Labs Koi Care Paramedic Kit, Topical Treatment Kit for Koi, Treats Cuts, Abrasions and Ulcers on Koi, Contains Koi Calm, Ulcer Swab and Propolis Wound Seal.

---

## 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.de/products/105571583-nt-labs-acriflavin-250ml](https://www.desertcart.de/products/105571583-nt-labs-acriflavin-250ml)

---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-26*