--- product_id: 112584356 title: "Eliminates Nuisance Algae & Improves Water Quality in Ponds Naturally – Best Algaecide Alternative (500ml)" brand: "nualgi ponds" price: "€ 0.07" currency: EUR in_stock: true reviews_count: 12 url: https://www.desertcart.pt/products/112584356-eliminates-nuisance-algae-and-improves-water-quality-in-ponds-naturally store_origin: PT region: Portugal --- # 100% natural & safe for pond life Treats 500,000 gallons per 500ml Visible effect in 3-5 hours Eliminates Nuisance Algae & Improves Water Quality in Ponds Naturally – Best Algaecide Alternative (500ml) **Brand:** nualgi ponds **Price:** € 0.07 **Availability:** ✅ In Stock ## Summary > 🌊 Transform your pond naturally—because your ecosystem deserves the best! ## Quick Answers - **What is this?** Eliminates Nuisance Algae & Improves Water Quality in Ponds Naturally – Best Algaecide Alternative (500ml) by nualgi ponds - **How much does it cost?** € 0.07 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/112584356-eliminates-nuisance-algae-and-improves-water-quality-in-ponds-naturally) ## Best For - nualgi ponds enthusiasts ## Why This Product - Trusted nualgi ponds brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Friendly & Safe:** Non-toxic formula protects fish, plants, amphibians, birds, and pets alike. - • **Rapid Natural Action:** Kickstarts beneficial diatom algae bloom within hours to outcompete nuisance algae. - • **Ultra-Efficient Dosage:** 1ml cleans 1000 gallons—maximize pond care with minimal effort. - • **Vibrant Pond Ecosystem:** Promotes healthier fish and plants, transforming your pond into a lively, colorful habitat. - • **Enhanced Water Clarity & Quality:** Boosts oxygen levels and bio-filter activity for crystal-clear, odor-free water. ## Overview Nualgi Ponds is a scientifically developed, nano-silica-based liquid solution that naturally eliminates nuisance algae by promoting beneficial diatom algae growth. Treating up to 500,000 gallons per 500ml, it acts within 3-5 hours to improve water clarity, oxygenation, and overall pond health without harming aquatic life, making it the ultimate eco-friendly alternative to traditional algaecides. ## Description Product description 500ml Treats 500,000 U.S. Gallons (1,892,705 Liters)Nualgi Ponds is a natural alternative to algaecides & other toxic water treatments used to control & remove pond algae. Our innovative approach to natural pond care and algae control works by restoring balance to your pond's Nitrogen Cycle and supercharging your pond's bio-filter from the ground up! BENEFITS: Increases oxygen levels & improves water quality & clarity to reduce & control pond algae and foul odors, Nualgi promotes greater fish and plant health while keeping the water crystal clear. Enjoy your new habitat and show off your pond as your fish become more active and your plants gain more color. WHAT IS NUALGI? Based on Over 15 Years of Research, Nualgi is the fourth generation of a patented nano-silica-based micro-nutrient supplement for all types of ponds, lakes & water gardens. Based on 9 years of lab research and 8 years of field research for applications in commercial and municipal water management. The Nualgi formula specifically helps pond owners improve water quality and manage algae on a much smaller scale. HOW DOES IT WORK? Within 3 - 5 hours of applying Nualgi Ponds, a bloom of Diatom algae (the good kind!) will develop. The diatom algae bloom out-competes nuisance algae for CO2, N, P and other nutrients, causing the bad algae to die off. It then locks away some of the harmful nutrients in the new bio mass that is consumed as live food for your fish and zooplankton. By kick-starting this natural process, the diatom algae out-compete the nuisance algae for nutrients, thus starving and eventually eliminating the bad algae from your pond! Directions Apply Nualgi Ponds to the pond, it starts working within 3-5 hours ## Features - ELIMINATES NUISANCE ALGAE NATURALLY – Nualgi Ponds is the outcome of 15 years of rigorous research that helps in cleansing pond water of nuisance algae naturally. Within few hours of applying Nualgi Ponds, Diatom algae blooms (beneficial algae), which further vies for carbon dioxide, nitrogen, phosphorous and other nutrients, thereby causing nuisance algae to die off as a result of non-availability of nutrients. - SAFE FOR FISH, PLANTS, AMPHIBIANS, BIRDS & PETS – Unlike other algaecides, Nualgi Ponds is completely safe for your pond as well as all the organisms present in it. The growing diatoms become food for zooplanktons, which in turn become live food for fish, which ultimately enhances their health. - IMPROVES WATER QUALITY – Nualgi Ponds works at the microscopic level. The exponential growth of diatoms provides oxygen to bacteria who in turn clean up the waste products of fish and leftovers. This natural process helps clean ponds and make their water sparkling without letting the water bodies emit any bad odour. - FAST ACTION AND HIGHLY EFFICIENT – Nualgi Ponds starts the process of cleaning almost immediately. Within just 3-5 hours of applying, the diatoms begin to develop, kick-starting the clean-up drive. Besides, 1ml of Nualgi Ponds is sufficient to clean 1000 gallons of water. This makes it highly efficient and easy to use. - ENSURES HEALTHIER HABITAT AND VIBRANT COLOUR IN YOUR POND – As Nualgi Ponds removes Nuisance Algae, it naturally provides fish a healthier habitat for living. When free from unwanted and nutrient-sucking algae, fish get more nutrients, which makes them more active and livelier. Besides, a cleaner pond will appear vibrant and colourful, thereby bringing joy to viewers. ## Technical Specifications | Specification | Value | |---------------|-------| | Product Dimensions | 30.48 x 10.16 x 15.24 cm; 141.75 g | | Item model number | nualgipd500 | | Item Form | Liquid | | Colour | White | | Size | 500ml | | Volume | 16 Fluid Ounces | | Quantity | 1 | | Batteries required | No | | Batteries Included | No | | Item Weight | 142 g | ## Product Details - **Brand:** Nualgi Ponds - **Liquid volume:** 16 Fluid Ounces - **Item weight:** 5 Ounces - **Item form:** Liquid - **Manufacturer:** Nualgi America, Inc. ## Images ![Eliminates Nuisance Algae & Improves Water Quality in Ponds Naturally – Best Algaecide Alternative (500ml) - Image 1](https://m.media-amazon.com/images/I/61980jq8xoL.jpg) ## Available Options This product comes in different **Size Name** options. ## Questions & Answers **Q: How much to treat 500 gallons** A: 0.5 ml or 10 drops per week. **Q: Do i need to turn off uv while using nualgi** A: You can start by turning it off. If the water gets a little green, turn it on. Do that intermittently until you don't need the UV at all. **Q: Is this safe and effective for a duck pond? I have a UV filter system which constantly gets gummed up.** A: I would think so **Q: Is there a 'best before' date? been using for 9 months and the product is looking quite murky. is it still effective?** A: I do not see a use by date on it so I think it is ok to use ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Un decided *by G***R on Reviewed in the United Kingdom on 14 February 2020* It didn’t work for me, maybe I didn’t use it correctly ### ⭐ 1.0 out of 5 stars Expensive and didn’t work *by N***Y on Reviewed in the United Kingdom on 15 August 2022* Expensive. Application dosage is measured in drops but it is not a dropper bottle. Did not make any difference whatsoever. Now trying barley straw. ### ⭐⭐⭐⭐ 4.0 out of 5 stars it works *by M***A on Reviewed in the United Kingdom on 10 June 2023* I have used other products in the past but nothing really worked that well. This one worked after just one application ( had to wait about 1 week to see results). Had to apply again within 3 weeks but the pond looks much better.It is small bottle for the price but for my 4000 liters pond I need just few drops ! --- ## 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.pt/products/112584356-eliminates-nuisance-algae-and-improves-water-quality-in-ponds-naturally](https://www.desertcart.pt/products/112584356-eliminates-nuisance-algae-and-improves-water-quality-in-ponds-naturally) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-08*