--- product_id: 12258123 title: "Magnesion" brand: "brightwell aquatics" price: "R492" currency: ZAR in_stock: true category: "Brightwell Aquatics" url: https://www.desertcart.co.za/products/12258123-magnesion store_origin: ZA region: South Africa --- # High-concentration ionic magnesium Pure formula, no organics Made in USA, premium quality Magnesion **Brand:** brightwell aquatics **Price:** R492 **Availability:** βœ… In Stock ## Summary > 🌊 Elevate your reef’s glow with ionic precision! ## Quick Answers - **What is this?** Magnesion by brightwell aquatics - **How much does it cost?** R492 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/12258123-magnesion) ## Best For - brightwell aquatics enthusiasts ## Why This Product - Trusted brightwell aquatics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Pure Ionic Power:** Free from EDTA, gluconate, and polygluconate for crystal-clear water - β€’ **Reef-Building Essential:** Supports aragonite formation for stronger coral and clam skeletons - β€’ **American-Made Excellence:** Trusted, high-quality solution crafted in the USA - β€’ **Precision Magnesium Boost:** Maintain optimal 1,290-1,320 ppm levels for reef vitality - β€’ **Scientifically Formulated:** Backed by empirical data and marine microbiology expertise ## Overview Brightwell Aquatics Magnesion is a highly concentrated ionic magnesium liquid designed to optimize reef aquarium health by balancing calcium and carbonate levels. Free from unwanted organic additives, it supports essential aragonite formation for coral and clam skeletons. Formulated with scientific rigor and made in the USA, this 250 ml solution treats up to 1,000 gallons, ensuring vibrant, thriving aquatic ecosystems. ## Description Brightwell Aquatics MAG250 Magnesion Liquid Salt Water Conditioner Elevate your reef aquarium's health with Brightwell Aquatics magnesium solution, a highly concentrated ionic compound formulated by marine scientists for aquarium water treatment. This aquarium water conditioner provides a potent dose of magnesium, regulating the delicate balance between calcium and carbonates in aquarium water. Crucial for reef-building organisms, magnesium is a key component of aragonite, the mineral responsible for skeletal material formation in corals, clams, and allies. Outclassing competitors, our solution is stronger, ensuring unparalleled effectiveness. It contains no unwanted organics like EDTA, gluconate, or polygluconate, offering a pure and focused solution. With a magnesium concentration recommendation of 1,290-1,320 ppm, achieve the perfect balance for immediate positive results in calcium supplementation. Understanding the unique requirements of each aquarium, our solution allows for precise dosing tailored to your setup's magnesium uptake rate. We recommend using a quality salt mix for stable seawater parameters, providing a robust ionic foundation. Trust in Brightwell Aquatics' commitment to purityβ€”our liquid water care supplements are made with purified water and high-purity materials. Formulated based on empirical data, our solutions prioritize observation and measurement over theory, ensuring a precise and effective formula for your aquarium's success. FEATURES AT A GLANCE Super strong solution to maintain a balance between calcium and carbonates No unwanted organic material Provides a potent dose of magnesium Developed based on empirical data, prioritizing observation and measurement Formulated utilizing extensive data compiled by microbiologists AMERICAN-MADE EXCELLENCE Trust in the quality and excellence of Brightwell Aquatics, an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently strive to deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium. ## Features - HIGH-CONCENTRATION IONIC MAGNESIUM SOLUTION - Magnesion Liquid Reef Salt Water Conditioner is a high-concentrate solution for maintaining the optimal balance in aquarium reef tanks. Magnesium salt regulates aquarium calcium and carbonate concentrations to prevent excessive inorganic precipitation - REEF-BUILDING ESSENTIAL - Our aquarium water conditioner is a highly-concentrated ionic magnesium solution that plays a vital role in the formation of aragonite, the skeletal material of reef-building organisms like coral and clams - FREE FROM ORGANIC MATERIAL - This aquarium water conditioner contains no unwanted organic material such as EDTA, gluconate, or polygluconate, providing a pure formula for your aquarium's well-being. A powerful solution, it effectively boosts the health and vitality of aquatic ecosystems - DIRECTIONS – Before use, shake the supplement well. Administer 5 ml (1 capful) every other day, or as necessary, to sustain magnesium levels between 1,290 - 1,320 ppm in 20 gallons of aquarium water. When employed this way, 250 ml treats up to 1,000 gallons (3,785 L) - AMERICAN-MADE EXCELLENCE – Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001DD2PN8 | | ASIN | B001DD2PN8 | | Allergen Information | Sulphites Free | | Best Sellers Rank | #14,135 in Pet Supplies ( See Top 100 in Pet Supplies ) #109 in Aquarium Water Treatments | | Brand Name | Brightwell Aquatics | | Customer Reviews | 4.7 4.7 out of 5 stars (459) | | Date First Available | June 24, 2004 | | Global Trade Identification Number | 00810086010370 | | Included Components | Magnesion | | Item Form | Liquid | | Item Type Name | Water Conditioner | | Item Weight | 0.25 kg | | Item model number | MAG250 | | Liquid Volume | 8.45 fluid ounces | | Manufacturer | TopDawg Pet Supply | | Manufacturer | TopDawg Pet Supply | | Manufacturer Part Number | MAG250 | | Model Number | MAG250 | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Product Dimensions | 1 x 1 x 1 inches; 8.82 ounces | | Target Species | Fish | | UPC | 810086010370 | | Unit Count | 1 Count | ## Product Details - **Brand:** Brightwell Aquatics - **Item Form:** Liquid - **Item Weight:** 0.25 kg - **Liquid Volume:** 8.45 fluid ounces - **Number of Packs:** 1 ## Images ![Magnesion - Image 1](https://m.media-amazon.com/images/I/71bxwPciGWL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Brightwell Aquatics Magnesion Liquid Salt Water Conditioner - Concentrated Magnesium Supplement For Reef and Marine Aquariums, 8.45 fl oz - Salifert Magnesium (MG) Test Kit - Seachem Reef Calcium 250ml --- ## 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.co.za/products/12258123-magnesion](https://www.desertcart.co.za/products/12258123-magnesion) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-09*