--- product_id: 48701259 title: "Koi Care Acriflavin Treatment (500ml Treats 18,200L)" brand: "nt labs" price: "$43.87" currency: USD in_stock: true reviews_count: 13 url: https://www.desertcart.us/products/48701259-koi-care-acriflavin-treatment-500ml-treats-18-200l store_origin: US region: United States of America --- # Treats up to 18,200L pond water 80 mg/100ml Acriflavine neutral Made in the UK with strict quality standards Koi Care Acriflavin Treatment (500ml Treats 18,200L) **Brand:** nt labs **Price:** $43.87 **Availability:** βœ… In Stock ## Summary > 🐟 Keep your koi thriving with the ultimate bacterial shield! ## Quick Answers - **What is this?** Koi Care Acriflavin Treatment (500ml Treats 18,200L) by nt labs - **How much does it cost?** $43.87 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48701259-koi-care-acriflavin-treatment-500ml-treats-18-200l) ## 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 - β€’ **Effortless Application:** Simple dosage calculation and easy mixing ensure stress-free pond treatment. - β€’ **Multi-Symptom Treatment:** Effectively combats fin, tail, mouth rot, and ulcers for total koi care. - β€’ **Trusted Legacy & Quality:** 40 years of industry trust with UK-made reliability for your prized koi. - β€’ **Massive Coverage Capacity:** One 500ml bottle treats up to 18,200 litersβ€”perfect for large koi ponds. - β€’ **Powerful Antiseptic Defense:** Clinically proven 80 mg/100ml Acriflavine neutral targets bacterial infections fast. ## Overview NT Labs Koi Care Acriflavin Treatment is a potent antiseptic and antibacterial liquid solution containing 80 mg/100ml Acriflavine neutral. Designed for large ponds up to 18,200 liters, it treats common koi ailments like fin, tail, and mouth rot, as well as ulcers. Easy to dose and apply, this UK-made product is part of a trusted 40-year-old koi care range, ensuring professional-grade protection and health for your prized fish. ## 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. - [ MADE IN BRITAIN ] : Proudly formulated and manufactured in the UK to strict quality, environmental and safety standards, delivering exceptional product reliability you can trust. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B003ZG8OMC | | Best Sellers Rank | 6,972 in Garden (See Top 100 in Garden) 60 in Water Garden & Pond Treatment | | Brand Name | NT Labs | | Country Of Origin | United Kingdom | | Customer Reviews | 4.6 4.6 out of 5 stars (336) 4.6 out of 5 stars | | Included Components | NT Labs Koi Care Acriflavin 500ml | | Item Form | Liquid | | Item Type Name | Koi Care Acriflavin | | Liquid Volume | 500 Millilitres | | Manufacturer | NT Labs | | Manufacturer Part Number | Aqua 393 | | Model Number | NT Labs | | Target Species | Fish | | Unit Count | 500.0 millilitre | | Upc | 733809002301 | ## Product Details - **Brand:** NT Labs - **Item form:** Liquid - **Liquid volume:** 500 Millilitres - **Manufacturer:** NT Labs - **Unit count:** 500.0 millilitre ## Images ![Koi Care Acriflavin Treatment (500ml Treats 18,200L) - Image 1](https://m.media-amazon.com/images/I/611WwbbqoXL.jpg) ![Koi Care Acriflavin Treatment (500ml Treats 18,200L) - Image 2](https://m.media-amazon.com/images/I/71fSTBIz9LL.jpg) ![Koi Care Acriflavin Treatment (500ml Treats 18,200L) - Image 3](https://m.media-amazon.com/images/I/81MEEj9HzZL.jpg) ![Koi Care Acriflavin Treatment (500ml Treats 18,200L) - Image 4](https://m.media-amazon.com/images/I/814ECeJw-tL.jpg) ![Koi Care Acriflavin Treatment (500ml Treats 18,200L) - Image 5](https://m.media-amazon.com/images/I/71623FtPs6L.jpg) ## Available Options This product comes in different **Size Name** options. ## 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 ### ⭐⭐⭐⭐⭐ Great stuff *by on Reviewed in the United Kingdom 13 August 2026* Easy to use and works ### ⭐⭐⭐⭐⭐ Great product *by on Reviewed in the United Kingdom 30 June 2026* Arrived on time, great product ### ⭐⭐⭐⭐⭐ Brilliant Size *by on Reviewed in the United Kingdom 29 June 2026* Good product, excellent size ## Frequently Bought Together - NT Labs Koi Care Acriflavin, Koi Medicine, Koi Treatment for Fin, Tail & Mouth Rot and Ulcers, Treats Bacterial Infections in Koi, Quarantine Solution for Koi, size - 500ml - NT Labs Koi Care Malachite, Koi Medicine, Malachite Green, Anti-Fungal Treatment for Koi, Treats Fungus Caused by Saprolegnia, 500ml --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/48701259-koi-care-acriflavin-treatment-500ml-treats-18-200l](https://www.desertcart.us/products/48701259-koi-care-acriflavin-treatment-500ml-treats-18-200l) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-31*