{"product_id":"reef-status-magnesium-carbonate-borate","title":"Reef Status: Magnesium Carbonate \u0026 Borate","description":"\u003cp\u003eNatural seawater concentration for magnesium is approximately 1,300 mg\/L. The magnesium concentration in kalkwasser treated aquaria may be as low as 600 – 700 mg\/L. In general, it is prudent to maintain magnesium concentrations in reef aquaria between 1,200–1,400 mg\/L.\u003c\/p\u003e\n\u003cp\u003eNatural seawater has a total alkalinity of about 2.5 meq\/L, of which about 0.1 – 0.2 meq\/L is from borate. In an aquarium, it is advantageous for both pH control and improved calcium stability to have a higher borate content. This, however, should not be at the expense of carbonate. It is useful, then, to maintain a total alkalinity of about 4 – 5 meq\/L with a borate component of about 1.5 – 2.0 meq\/L.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Reef Status: Magnesium Carbonate \u0026 Borate 50 Tests - MAP Price $44.46","offer_id":56594762596655,"sku":"924","price":28.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/9322\/6031\/files\/reef-status-magnesium.jpg?v=1775950627","url":"https:\/\/openhouse.carolinaaquatics.com\/products\/reef-status-magnesium-carbonate-borate","provider":"Carolina Aquatics Open House","version":"1.0","type":"link"}