--- product_id: 48317778 title: "NT Labs White Spot Treatment for Tropical Fish (100ml Treats 500L)" brand: "nt labs" price: "€ 25.51" currency: EUR in_stock: true reviews_count: 8 category: "Nt Labs" url: https://www.desertcart.hr/products/48317778-nt-labs-white-spot-treatment-for-tropical-fish-100ml-treats store_origin: HR region: Croatia --- # 7-day targeted treatment course 100ml treats 500L aquarium Safe for shrimp, snails & fish NT Labs White Spot Treatment for Tropical Fish (100ml Treats 500L) **Brand:** nt labs **Price:** € 25.51 **Availability:** ✅ In Stock ## Summary > 🐠 Clear water, happy fish — beat white spot before it spreads! ## Quick Answers - **What is this?** NT Labs White Spot Treatment for Tropical Fish (100ml Treats 500L) by nt labs - **How much does it cost?** € 25.51 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/48317778-nt-labs-white-spot-treatment-for-tropical-fish-100ml-treats) ## 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 - • **Proudly British Quality:** Formulated & manufactured in the UK under strict safety and environmental standards. - • **Stress-Free Aquarium Care:** Non-toxic to sensitive species like shrimp and snails—no need to compromise your ecosystem. - • **Visible Results in One Week:** Follow the 7-day regimen for clear, healthy fish and a vibrant tank. - • **Powerful Dual-Action Formula:** Malachite Green & Formaldehyde combine to eradicate white spot & fungus fast. - • **Precision Dosage, Zero Guesswork:** Use NT Labs Dosage Calculator for perfect treatment every time. ## Overview NT Labs White Spot Treatment is a 100ml liquid solution designed to treat up to 500L of aquarium water, targeting protozoan parasites causing white spot and fungal infections in tropical fish. Its dual active ingredients, Malachite Green (140 mg/100 ml) and Formaldehyde (800 mg/100 ml), provide a potent 7-day treatment course that is safe for shrimp, snails, and fish. Easy to dose with an online calculator, this UK-made formula ensures effective parasite control without harming your aquatic ecosystem. ## Description Free delivery and returns on eligible orders. Buy NT Labs White Spot Treatment for Tropical Fish (100ml Treats 500L) | 7-day treatment for white spot and cotton wool fungus in tropical fish. Safe for shrimp and snails. at desertcart UK. Review: It works - I finished last treatment on Monday today being wednesday and white spot is gone. I bought new fish from a different supplier and made fatal error - didn't isolate the new fish. Within a day new fish were covered in white spot. I Lost all but two of them. Then my residential fish then went on to catch white spot even after water changes adding aquarium salt and a more expensive natural white spot treatment as I was worried about using nt labs treatment because I have shrimp and snails. With everyday I treated the tank with nt labs treatment I lost a fish the following day. I'm not sure if it was treatment or white spot as all together I lost 12 fish with white spot including rummy nose tertas, galaxy rasboras, cardinal tetras, ember tetras and my grandsons favourite a red dragon scaled betta named draco However fish now all look healthy and not seen any white spot since day three of treatment. And all my snails and shrimp survived unscathed. Due to how bad the white spot infection was and the effective of this treatment I'd recommend. However some fish maybe sensitive to the treatment so do your research Review: Good product and decent price - I used the NT Labs Anti White Spot & Fungus treatment when a couple of fish in my tank started showing those classic tiny white spots, and overall it did a good job clearing things up. The dosing schedule was easy to follow, and I appreciated that it didn’t seem to harm my plants or filter system while it worked. The water did turn a bit green during treatment, which wasn’t ideal for aesthetics, but it cleared up a few days after finishing the course. Most importantly, my fish looked much healthier and more active after the treatment — so for the price and ease of use, I’d say it’s a solid choice for dealing with common freshwater ailments. ## Features - May cause an allergic skin reaction. - May cause cancer. - 【 WHITE SPOT TREATMENT 】: White spot is a protozoan parasite; the adults live on the fish and appear as tiny white spots. The adult has a complex life cycle which results in hundreds of free-swimming juveniles looking for a host fish to infest. Combat white spot and fungus in your aquarium with our specialised Aquarium Anti-White Spot & Fungus solution, containing two active ingredients - Malachite Green (140 mg/100 ml) and Formaldehyde (800 mg/100 ml). - 【 RELIEVES FISH FROM IRRITATION 】: Easily identify when to use the treatment by observing small white spots resembling grains of salt on your fish. If your fish show signs of irritation, rubbing against objects, exhibit a grey, velvety film or have white cotton wool-like growths on their body/mouth/ fins, our treatment is the perfect solution. - 【 EASY TO USE 】: Simply calculate the volume of your aquarium in litres (length x width x depth in cm/1000) or use the NT Labs online Dosage Calculator. Shake the bottle thoroughly before use and mix required dose of treatment with 1 litre of aquarium water. Add slowly to aquarium. Changing water between doses is not recommended, except in an emergency. Follow these simple steps for optimal results. - 【 7-DAY COURSE OF TREATMENT 】: Designed as a 7-day course of treatment, our powerful solution efficiently targets protozoan parasites, providing comprehensive relief for your fish. Adding the first dose to the aquarium is day 1. Repeat the dose on days 3, 5, and 7. After the 7th day, wait 7 days before a partial water change. Repeat or use another medication as needed, following the same dosing schedule. - 【 NON-TOXIC TO SNAILS, SHRIMP AND FISH 】: The concentration of the product is non-toxic to snails, shrimp and fish, etc. All of the medication in our Aquarium range are formulated with sensitive species in mind. There's no need to use half doses, but if you think you have a particularly sensitive fish, you can always give the treatment as two halves given throughout the day. The solution will colour the water green but this should fade within a few days of the final dose being added. - [ 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 | B0084JKZP4 | | Best Sellers Rank | 4,731 in Pet Supplies ( See Top 100 in Pet Supplies ) 49 in Aquarium Water Treatments | | Brand | NT Labs | | Brand Name | NT Labs | | Customer Reviews | 4.7 out of 5 stars 474 Reviews | | Item Form | Liquid | | Item Highlight | 7-day treatment for white spot and cotton wool fungus in tropical fish. Safe for shrimp and snails. | | Item Type Name | Aquarium Anti - White Spot and Fungus | | Item Weight | 0.13 Kilograms | | Item form | Liquid | | Item weight | 0.13 Kilograms | | Liquid Volume | 100 Millilitres | | Liquid volume | 100 Millilitres | | Manufacturer | NT Labs Aquarium | | Manufacturer Part Number | NT477 | | Model Number | NT477 | | Pet Type | Fish | | Product Warranty | 1 | | Target Species | Fish | | UPC | 733809004770 | | Unit Count | 1 count | | Unit count | 1 count | ## Product Details - **Brand:** NT Labs - **Item form:** Liquid - **Item weight:** 0.13 Kilograms - **Liquid volume:** 100 Millilitres - **Unit count:** 1 count ## Images ![NT Labs White Spot Treatment for Tropical Fish (100ml Treats 500L) - Image 1](https://m.media-amazon.com/images/I/71ACbGmVYKL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is it safe to use with shrimps in tank** A: yes **Q: Is it ok to do small water change during 7 day treatment?** A: I’d recommend no water changes till treatment period has finished. **Q: Can you this in a pond?** A: The instructions say for all ornamental fish only and the dosage is for aquariums, so not sure about ponds. **Q: Will i need to take anything out of my filter?** A: I didn’t take anything out of the filter, just worked out how much treatment to use, it worked well fish were fine after a while. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works *by M***E on 23 April 2025* I finished last treatment on Monday today being wednesday and white spot is gone. I bought new fish from a different supplier and made fatal error - didn't isolate the new fish. Within a day new fish were covered in white spot. I Lost all but two of them. Then my residential fish then went on to catch white spot even after water changes adding aquarium salt and a more expensive natural white spot treatment as I was worried about using nt labs treatment because I have shrimp and snails. With everyday I treated the tank with nt labs treatment I lost a fish the following day. I'm not sure if it was treatment or white spot as all together I lost 12 fish with white spot including rummy nose tertas, galaxy rasboras, cardinal tetras, ember tetras and my grandsons favourite a red dragon scaled betta named draco However fish now all look healthy and not seen any white spot since day three of treatment. And all my snails and shrimp survived unscathed. Due to how bad the white spot infection was and the effective of this treatment I'd recommend. However some fish maybe sensitive to the treatment so do your research ### ⭐⭐⭐⭐⭐ Good product and decent price *by K***9 on 13 January 2026* I used the NT Labs Anti White Spot & Fungus treatment when a couple of fish in my tank started showing those classic tiny white spots, and overall it did a good job clearing things up. The dosing schedule was easy to follow, and I appreciated that it didn’t seem to harm my plants or filter system while it worked. The water did turn a bit green during treatment, which wasn’t ideal for aesthetics, but it cleared up a few days after finishing the course. Most importantly, my fish looked much healthier and more active after the treatment — so for the price and ease of use, I’d say it’s a solid choice for dealing with common freshwater ailments. ### ⭐⭐⭐⭐⭐ Saved my tank!! *by L***O on 31 August 2026* Saved my fish and didn't harm my snails or plecos. Use per instructions and your tank will be fine. Easy to dose. It will turn your water a funny colour but does disperse. ## Frequently Bought Together - NT Labs Aquarium Anti White Spot and Fungus Treatment, Cures White-Spot Disease, Treats Fish Fungus, Freshwater Aquarium Medicine, 100ml Treats 500 litres (100ml) - Interpet Anti Fungus and Finrot Aquarium Fish Treatment, Treats Affected Fish, Prevents Disease Spreading, 100 ml, Treats 500 litres --- ## 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.hr/products/48317778-nt-labs-white-spot-treatment-for-tropical-fish-100ml-treats](https://www.desertcart.hr/products/48317778-nt-labs-white-spot-treatment-for-tropical-fish-100ml-treats) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-10-08*