{"product_id":"seachem-reef-advantage-magnesium-600g","title":"Reef Advantage Magnesium 600 g — Magnesium 80,000 ppm Ammonia Free | Seachem","description":"\u003cp\u003eSeachem Reef Advantage Magnesium is a concentrated 80,000 ppm powdered magnesium supplement composed of an optimized blend of magnesium salts, chloride, and sulfate. It restores depleted magnesium levels with minimal impact on the ionic ratios of natural seawater. Unlike competing liquid magnesium supplements, it contains no ammonia.\u003c\/p\u003e\n\n\u003ch2\u003e Main advantages\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e High concentration of 80,000 ppm — ionically balanced mixture of magnesium, chloride and sulfate\u003c\/li\u003e\n\n\u003cli\u003e Ammonia-free — a common contaminant in all liquid magnesium supplements on the market\u003c\/li\u003e\n\n\u003cli\u003e Minimal impact on the ionic ratios of natural seawater\u003c\/li\u003e\n\n\u003cli\u003e Economical powder format, compatible with pre-mixed solution dosing pumps\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Use in reef aquariums\u003c\/h2\u003e\n\u003cp\u003e Magnesium plays a critical role in reef water chemistry. Severely depleted levels (below 800 mg\/L) can lead to a depressed pH and an inability to maintain calcium levels. The most common causes of magnesium deficiency are the use of kalkwasser, overdosing with carbonate additives, or insufficient levels in sea salt. Kalkwasser precipitates magnesium as magnesium hydroxide—an extremely insoluble and irreversible reaction. Excess carbonates precipitate it as magnesium carbonate, which slowly redissolves. Seachem recommends maintaining magnesium levels between 1200 and 1350 mg\/L.\u003c\/p\u003e\n\n\u003ch2\u003e Dosage\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e Beginner: 5 g (1 level teaspoon) per 80 L (20 US gallons), twice a week. Dissolve in at least 250 ml (1 cup) of fresh water.\u003c\/li\u003e\n\n\u003cli\u003e Advanced: Dose until reaching 1200–1350 mg\/L. Each 5 g dose per 80 L increases magnesium by 5 mg\/L. Do not exceed 25 g per 80 L per day.\u003c\/li\u003e\n\n\u003cli\u003e Expert: determine the depletion rate and configure a continuous drip. Formula: g = v × m ÷ 80 (g = grams, v = volume in liters, m = increase in mg\/L).\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Guaranteed ingredient and analysis\u003c\/h2\u003e\n\u003cp\u003e Ingredients: magnesium sulfate, sodium chloride. Content per gram: minimum 80 mg magnesium.\u003c\/p\u003e\n\n\u003ch2\u003e Manufacturer's precautions\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e Do not exceed 25 g per 80 L per day\u003c\/li\u003e\n\n\u003cli\u003e An excess of magnesium can accelerate the loss of carbonate alkalinity.\u003c\/li\u003e\n\n\u003cli\u003e Do not mix directly with a carbonate supplement — alternate days or wait at least 30 minutes\u003c\/li\u003e\n\n\u003cli\u003e A slight clump may form, but this does not affect use — the clumps break easily\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Preparation for dosing pump\u003c\/h2\u003e\n\u003cp\u003e To prepare an automated dosing solution, dissolve 1 to 2 cups of Reef Advantage Magnesium in 1 L of fresh water. Calculate the weekly amount based on your aquarium's consumption rate and divide by 7 to obtain the daily dosage.\u003c\/p\u003e\n\n\u003ch2\u003e Available formats\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e 300 g\u003c\/li\u003e\n\n\u003cli\u003e 600 g\u003c\/li\u003e\n\n\u003cli\u003e 1.2 kg\u003c\/li\u003e\n\n\u003cli\u003e 4 kg\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Why choose Reef Advantage Magnesium from ReefSolution?\u003c\/h2\u003e\n\u003cp\u003e For a complete reef supplementation program, combine Seachem Reef Advantage Magnesium with Seachem Reef Advantage Calcium for calcium and Seachem Reef Carbonate for alkalinity. Monitor your levels with the Salifert Magnesium Test Kit or the Hanna Checker Magnesium for accurate dosing.\u003c\/p\u003e\n\n\u003ch2\u003e Frequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003e Why is my magnesium level constantly dropping in my reef aquarium?\u003c\/h3\u003e\n\u003cp\u003e The most frequent causes are the use of kalkwasser (which irreversibly precipitates magnesium into hydroxide), overdosing on carbonate additives, or using sea salt with insufficient magnesium levels. Test regularly and adjust dosage accordingly.\u003c\/p\u003e\n\n\u003ch3\u003e Can Reef Advantage Magnesium be used with a dosing pump?\u003c\/h3\u003e\n\u003cp\u003e Yes. Dissolve 1 to 2 cups in 1 L of fresh water to create a dosing solution. Calculate the weekly amount based on your system's consumption and divide by 7 for the daily dosage.\u003c\/p\u003e\n\n\u003ch3\u003e What level of magnesium should be maintained in a reef aquarium?\u003c\/h3\u003e\n\u003cp\u003e Seachem recommends between 1200 and 1350 mg\/L. Levels below 800 mg\/L can depress the pH and prevent calcium retention.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":38010154385579,"sku":"000116063302","price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/Seachem-Reef-Advantage-Magnesium-Raises-Magnesium-for-Aquariums_3159a0f7-2595-40e4-b53c-9718f221073a.ddfc9e4903e9f6d04a9501fe54b4b347.webp?v=1773601789","url":"https:\/\/reefsolution.com\/en\/products\/seachem-reef-advantage-magnesium-600g","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}