{"product_id":"mills-calmag","title":"Mills Calmag","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eMills Nutrients CalMag | Calcium \u0026amp; Magnesium Supplement for Plants\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eMills Nutrients CalMag is a premium calcium and magnesium supplement designed to prevent and correct deficiencies in two of the most critical secondary macronutrients in plant nutrition. Whether you're growing in a soft water area, using reverse osmosis (RO) filtered water, or simply pushing your plants hard during peak flower, CalMag is an essential addition to any serious grower's nutrient toolkit.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWho Needs Mills CalMag?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCalMag is particularly important for growers in soft water regions where tap water has a starting EC below 0.3, and for those using RO filtration systems that strip minerals from the water supply. Coco coir growers also benefit significantly, as coco naturally demands higher levels of calcium and magnesium compared to soil or hydroponic growing.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEven in hard water areas, heavily boosting phosphorus and potassium during peak flowering can trigger \u003cstrong\u003ecalcium and magnesium lockout\u003c\/strong\u003e — a common issue that CalMag directly resolves, restoring nutrient availability and bringing plants back to full health quickly.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cem\u003eNote: If you're already using Mills Basis A\u0026amp;B Soft Water, you may not need CalMag — the Basis SW formula already accounts for the lower calcium and magnesium levels found in soft water and RO supplies.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eHow Mills CalMag Works\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eCalcium\u003c\/strong\u003e is fundamental to plant structure and function. It reinforces individual cell walls for stronger, more resilient plants, and activates key enzymes that act as biocatalysts — accelerating the chemical reactions that drive healthy growth. Calcium deficiency leads to stunted growth, increased stress, and greater vulnerability to pests, diseases, and environmental fluctuations.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eMagnesium\u003c\/strong\u003e is a core building block of chlorophyll — the green pigment responsible for capturing light energy during photosynthesis. Optimised photosynthesis directly translates to faster growth rates, better energy efficiency, and plants that consistently reach their full genetic potential. Without sufficient magnesium, chlorophyll production suffers, leading to yellowing leaves and reduced vigour.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eKey Benefits of Mills Nutrients CalMag:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBoosts calcium and magnesium levels in your nutrient solution quickly and effectively\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePrevents and treats calcium and magnesium deficiencies across all growth stages\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIdeal for soft water growers and those using reverse osmosis filtration\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEssential for coco coir growers where calcium and magnesium demand is naturally higher\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCounters nutrient lockout caused by high phosphorus and potassium use during peak flower\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStrengthens cell walls for tougher, more stress-resistant plants\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIncreases photosynthesis rates to support faster, healthier growth\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompatible with all growing media and nutrient systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MILLS","offers":[{"title":"Mills Calmag SW R\/O 1L","offer_id":58178139783555,"sku":"HYN-2931","price":15.5,"currency_code":"GBP","in_stock":false},{"title":"5L","offer_id":58178139816323,"sku":"HYN-2932","price":61.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0293\/9004\/5244\/files\/CALMAG-5L-Trans-1000px.png?v=1780482954","url":"https:\/\/edenhorticulture.co.uk\/products\/mills-calmag","provider":"Eden Horticulture Ltd","version":"1.0","type":"link"}