{"product_id":"seachem-reef-fusion-1","title":"Reef Fusion 1 — Ionic Calcium 100,000 mg\/L 2-Part System 1 L, 2 L and 4 L - Seachem","description":"\u003cp\u003eSeachem Reef Fusion 1 is a concentrated ionic calcium supplement at 100,000 mg\/L, enriched with magnesium, strontium, boron, iron, manganese, and molybdenum in biologically appropriate proportions. It is part of the Reef Fusion system — the most concentrated 2-part system on the market — with a simple 1:1 dosing ratio with Seachem Reef Fusion 2 (alkalinity). Available in 1 L, 2 L and 4 L.\u003c\/p\u003e\n\u003ch2\u003eMain advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConcentrated ionic calcium at 100,000 mg\/L with essential trace elements\u003c\/li\u003e\n\u003cli\u003eIncludes magnesium, strontium, boron, iron, manganese, and molybdenum in biological ratios\u003c\/li\u003e\n\u003cli\u003eSimple 1:1 dosing ratio with Reef Fusion 2\u003c\/li\u003e\n\u003cli\u003eCompatible with dosing pumps for automated maintenance\u003c\/li\u003e\n\u003cli\u003eCan be used separately to target calcium independently of alkalinity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUse in reef aquariums\u003c\/h2\u003e\n\u003cp\u003eCalcium is essential for the growth of SPS and LPS corals, as well as coralline algae. Reef Fusion 1 stands out from traditional calcium supplements by simultaneously providing the trace elements that are depleted in proportion to calcium in a reef aquarium. Combined with Seachem Reef Fusion 2, it maintains the calcium-alkalinity balance necessary for healthy coral growth.\u003c\/p\u003e\n\u003ch2\u003eDosage\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDose every 1 to 2 days. Shake well before use.\u003c\/li\u003e\n\u003cli\u003eAdd 1 ml of Reef Fusion 1 per 25 L (6.5 US gallons) in a high-flow area. Wait a few minutes, then add 1 ml of Reef Fusion 2 per 25 L.\u003c\/li\u003e\n\u003cli\u003eEach dose provides 4 mg\/L of calcium and 0.176 meq\/L of alkalinity.\u003c\/li\u003e\n\u003cli\u003eMaintain calcium between 380 and 420 mg\/L and alkalinity between 3 and 6 meq\/L (8–17 dKH).\u003c\/li\u003e\n\u003cli\u003eDo not exceed 4 ml per 25 L per day.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGuaranteed analysis (per gram)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCalcium: 95–105 mg\u003c\/li\u003e\n\u003cli\u003eMagnesium: 5 mg\u003c\/li\u003e\n\u003cli\u003eStrontium: 0.1 mg\u003c\/li\u003e\n\u003cli\u003eBoron: 0.020 mg\u003c\/li\u003e\n\u003cli\u003eIron: 0.0005 mg\u003c\/li\u003e\n\u003cli\u003eManganese: 0.0001 mg\u003c\/li\u003e\n\u003cli\u003eMolybdenum: 0.0005 mg\u003c\/li\u003e\n\u003cli\u003eRubidium: 0.014 mg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eManufacturer's precautions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNever mix Reef Fusion 1 directly with Reef Fusion 2\u003c\/li\u003e\n\u003cli\u003eAdd the two products to separate locations in the aquarium\u003c\/li\u003e\n\u003cli\u003eMake significant adjustments gradually to avoid shocking corals and invertebrates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAvailable formats\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 L\u003c\/li\u003e\n\u003cli\u003e2 L\u003c\/li\u003e\n\u003cli\u003e4 L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose Reef Fusion 1 at ReefSolution\u003c\/h2\u003e\n\u003cp\u003eFor a complete dosing system, pair Reef Fusion 1 with \u003ca href=\"\/en\/products\/seachem-reef-fusion-2\"\u003e\u003cstrong\u003eSeachem Reef Fusion 2\u003c\/strong\u003e\u003c\/a\u003e in a 1:1 ratio — the alkalinity half of the same system. For a standalone powdered calcium, see \u003ca href=\"\/en\/products\/seachem-reef-advantage-calcium\"\u003e\u003cstrong\u003eReef Advantage Calcium\u003c\/strong\u003e\u003c\/a\u003e. Monitor your levels with the \u003ca href=\"\/en\/products\/salifert-calcium-test-kit\"\u003e\u003cstrong\u003eSalifert Calcium Test Kit\u003c\/strong\u003e\u003c\/a\u003e for precise maintenance.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan Reef Fusion 1 be used alone without Reef Fusion 2?\u003c\/h3\u003e\n\u003cp\u003eYes. Seachem confirms that both products can be used individually if your system has an imbalance. Reef Fusion 1 targets calcium, while Reef Fusion 2 targets alkalinity.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between Reef Fusion 1 and Reef Advantage Calcium?\u003c\/h3\u003e\n\u003cp\u003eReef Fusion 1 is designed for the 2-part system in a 1:1 ratio with Fusion 2, at 100,000 mg\/L. Reef Advantage Calcium is a standalone powder supplement with a calcium concentration providing +12 mg\/L per 5 g dose per 150 L.\u003c\/p\u003e\n\u003ch3\u003eWhy does Reef Fusion 1 contain trace elements in addition to calcium?\u003c\/h3\u003e\n\u003cp\u003eMagnesium, strontium, boron, iron, manganese, and molybdenum are included in proportions corresponding to typical reef utilization levels. This allows these essential elements to be maintained without additional supplementation.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"1 L","offer_id":38010618052779,"sku":"20300","price":26.99,"currency_code":"CAD","in_stock":true},{"title":"2 L","offer_id":47580619636907,"sku":"20301","price":37.99,"currency_code":"CAD","in_stock":true},{"title":"4 L","offer_id":47580619669675,"sku":"20302","price":48.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/products\/1reef_fusion1L_8421fb12-181f-4681-9855-8808740b822c.jpg?v=1773599989","url":"https:\/\/reefsolution.com\/en\/products\/seachem-reef-fusion-1","provider":"Reef Solution","version":"1.0","type":"link"}