--- product_id: 219277707 title: "Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank" brand: "arka" price: "R786" currency: ZAR in_stock: true reviews_count: 13 category: "Arka" url: https://www.desertcart.co.za/products/219277707-nitrate-and-phosphate-remover-aquarium-arka-nopo-control-473-ml store_origin: ZA region: South Africa --- # Crystal-clear water clarity Reef-safe & gentle formula Biological nutrient reduction Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank **Brand:** arka **Price:** R786 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your aquarium’s ecosystem with ARKA NOPO Control — where science meets crystal-clear beauty! ## Quick Answers - **What is this?** Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank by arka - **How much does it cost?** R786 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/219277707-nitrate-and-phosphate-remover-aquarium-arka-nopo-control-473-ml) ## Best For - arka enthusiasts ## Why This Product - Trusted arka brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Simple, Precise Dosing:** Easy daily dosing system with visible results in days—tailor your treatment for maximum efficiency. - • **Trusted Pro-Grade Solution:** ARKA’s advanced carbon blend replaces multiple treatments, delivering sustainable, professional water care. - • **Crystal-Clear Water, Always:** Prevents algae growth and stabilizes water parameters for a flawless aquatic display. - • **Boost Your Bacteria’s Power:** Activates natural bacteria to rapidly reduce nitrate & phosphate levels, keeping your tank pristine. - • **Reef-Safe for Sensitive Species:** Gentle, chemical-free formula perfect for corals, shrimp, and ornamental fish—no pH swings or residues. ## Overview ARKA NOPO Control is a 473 ml liquid solution designed to biologically reduce nitrate (NO3) and phosphate (PO4) in freshwater and marine aquariums by activating beneficial bacteria. This reef-safe, chemical-free formula enhances bacterial performance to prevent algae growth and stabilize water parameters, ensuring a healthy environment for sensitive species like corals and shrimp. With a simple dosing system and proven results in days, it’s a professional-grade nutrient control trusted worldwide for sustainable aquarium management. ## Description From the manufacturer ARKA NOPO Control Nitrate & phosphate control in the aquarium NO3PO4 Control is a specially developed solution of selected carbon compounds that supports the biodegradation of nitrate (NO3) and phosphate (PO4) in freshwater and saltwater aquariums. The product serves as an energy source for beneficial bacteria in the aquarium. These bacteria use the extra carbon to break down nitrate and phosphate more efficiently, reducing nutrient levels in the water. By activating the existing bacterial cultures, the biological filter performance in the aquarium is improved, which can reduce even higher nutrient values in a targeted and controlled manner. NO3PO4 Control supports, among other things The biological degradation of nitrates, the reduction of phosphate values, an increased activity of beneficial bacteria, a stable water biology in the aquarium No phosphate - no nitrate degradation Note that bacteria require a certain amount of phosphate as an energy source to carry out important biological processes (such as denitrification NO3 nitrate - > N2 nitrogen) in the aquarium. As NOPO Control increases the growth and performance of bacteria in the aquarium, the phosphate requirement also increases. Therefore, measure regularly (at least once daily) the phosphate value and dose Basic P if necessary. When nitrate and phosphate become a problem In every aquarium, nutrients such as nitrate (NO3) and phosphate (PO4) are continuously produced by food residues, animal excretions and dead organic substances. These substances are part of the natural biological cycle, but can accumulate in water over time. If the nutrient values increase permanently, this can lead to unwanted algae growth and strain the biological balance in the aquarium. Why do bacteria sometimes need a booster? Imagine the following: They are a nitrate degrading bacteria and come into an aquarium. There is a huge mountain of nitrate. As you try to break it down, new nitrate is constantly added. This means that even if you work with maximum efficiency, you can never break down the entire mountain of nitrate. Exactly this problem is the bacteria really present in your aquarium NOPO Control acts like an energy drink for your bacteria and ensures significantly increased performance and reproduction during use. Thus, the additional workload is no problem and quickly dismantled Easy to use for controlled nutrient levels The targeted addition increases the performance of the bacteria, which allows nutrients to be processed faster. Please note that bacteria also need a certain amount of phosphate as an energy source for important biological processes - such as nitrate degradation. Regular control of water values helps to optimally adjust the dosage to the conditions in the aquarium. Dosage recommendation 2 ml per 100 litres of aquarium water daily dosage if necessary gradually up to max. Increase 10 ml per 100 litres of water. Maintain dosage until a measurable reduction in nitrate and phosphate values is achieved. After reaching the desired water values, adjust the dosage accordingly for maximum effectiveness in combination with special blend Review: Great - Good value Review: Marine tank - Works well Good value for money ## Features - Biologically reduces nitrate (NO3) & phosphate (PO4) – supports natural bacteria activity to eliminate excess nutrients – crystal-clear water & stable water values – ideal for algae prevention - Advanced carbon source blend – boosts nitrification & denitrification – enhances filter bacteria performance – promotes natural phosphate breakdown – chemical-free nutrient control - Reef-safe & gentle – no water clouding, no pH swings, no harmful residues – perfect for sensitive species like corals, shrimp & ornamental fish – safe for all tank types - Simple dosing system – start with 2 ml per 100 L daily – gradually increase up to 10 ml – results visible in just a few days – works great with ARKA Basic N & P nutrient system - ARKA system care solution – replaces standalone nitrate & phosphate removers – trusted by aquarists worldwide – available in 118 ml, 473 ml & 5000 ml – for sustainable, professional water management ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0874PH752 | | Allergen Information | Allergen-Free | | Best Sellers Rank | 18,960 in Pet Supplies ( See Top 100 in Pet Supplies ) 214 in Aquarium Water Treatments | | Brand | ARKA | | Brand Name | ARKA | | Country Of Origin | Germany | | Customer Reviews | 4.4 out of 5 stars 366 Reviews | | EU Spare Part Availability Duration | 2 Years | | Included Components | 1x NOPO Control 473ml | | Item Form | Liquid | | Item Type Name | NOPO16US | | Item Weight | 0.47 Kilograms | | Item form | Liquid | | Item weight | 0.47 Kilograms | | Liquid Volume | 473 Millilitres | | Liquid volume | 473 Millilitres | | Manufacturer | ARKA Biotechnologie GmbH | | Manufacturer Part Number | NOPO16US | | Model Number | NOPO16US | | Product Warranty | 12 | | Target Species | Fish | | UPC | 710270146154 | | Unit Count | 473.0 millilitre | | Unit count | 473.0 millilitre | ## Product Details - **Brand:** ARKA - **Item form:** Liquid - **Item weight:** 0.47 Kilograms - **Liquid volume:** 473 Millilitres - **Manufacturer:** ARKA Biotechnologie GmbH ## Images ![Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank - Image 1](https://m.media-amazon.com/images/I/719914owLGL.jpg) ![Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank - Image 2](https://m.media-amazon.com/images/I/71bhPJCbhML.jpg) ![Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank - Image 3](https://m.media-amazon.com/images/I/71xEq4xf+-L.jpg) ![Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank - Image 4](https://m.media-amazon.com/images/I/91EZ5YXH-AL.jpg) ![Nitrate & Phosphate Remover Aquarium – ARKA NOPO Control 473 ml – biologically reduces NO3 & PO4 via bacteria activation – for clear water & stable parameters – reef-safe for freshwater & marine tank - Image 5](https://m.media-amazon.com/images/I/91N-e3k16aL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great *by O***K on 4 January 2026* Good value ### ⭐⭐⭐⭐⭐ Marine tank *by L***L on 5 October 2025* Works well Good value for money ### ⭐⭐⭐⭐⭐ I recommend this. *by M***N on 25 May 2026* My Nitrate and Phosphate reading were off the scale and I used this, and within a fortnight my aquarium water was stable with low nitrate and phosphate readings --- ## 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.co.za/products/219277707-nitrate-and-phosphate-remover-aquarium-arka-nopo-control-473-ml](https://www.desertcart.co.za/products/219277707-nitrate-and-phosphate-remover-aquarium-arka-nopo-control-473-ml) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-09*