{"product_id":"ionic-cal-mag-pro","title":"Ionic Cal-Mag Pro Calcium and Magnesium Nutrient Supplement","description":"\u003ch2\u003eTop Up the Two Elements Coco Quietly Takes Away\u003c\/h2\u003e\u003cp\u003eCal-Mag Pro is a supplement that supplies plant-available \u003cstrong\u003ecalcium\u003c\/strong\u003e and \u003cstrong\u003emagnesium\u003c\/strong\u003e alongside \u003cstrong\u003enitrogen\u003c\/strong\u003e, \u003cstrong\u003eiron\u003c\/strong\u003e, amino acids, humic acids and complex plant extracts. Fast-growing plants draw heavily on both elements, and peak flowering is when demand outstrips supply. It is particularly useful in coco, which holds on to calcium, and in any room running a strong PK booster, where high potassium levels can lock calcium and magnesium out. Available in \u003cstrong\u003e300ml, 1 litre and 5 litre\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant-available forms\u003c\/strong\u003e - calcium and magnesium are supplied in forms the plant can take up straight away.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes interveinal yellowing\u003c\/strong\u003e - the classic magnesium shortage that shows as yellowing between the leaf veins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAddresses calcium spotting\u003c\/strong\u003e - the small dark brown spots with sharp edges that follow a calcium shortfall.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for coco\u003c\/strong\u003e - offsets the calcium that coco fibre binds before the roots ever reach it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports heavy PK feeding\u003c\/strong\u003e - counters the lockout that high potassium levels can cause in late flower.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen and iron included\u003c\/strong\u003e - keeps new growth green rather than simply patching one element.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Hidden Cause of Yellowing Leaves\u003c\/h3\u003e\u003cp\u003eA pale, patchy plant usually gets read as a feed problem, so growers push the EC up and make things worse. More often the elements are present but blocked. Coco binds calcium on the way past, and a heavy PK dose floods the root zone with potassium that competes for the same uptake sites. Adding calcium and magnesium separately restores the ratio instead of raising everything at once.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdd to fresh water before your base nutrient, not into a concentrated feed.\u003c\/li\u003e\n\u003cli\u003eStir well, then add the rest of the feed and set pH last.\u003c\/li\u003e\n\u003cli\u003eUse routinely through coco grows rather than waiting for symptoms.\u003c\/li\u003e\n\u003cli\u003eIncrease during peak flowering and alongside any strong PK booster.\u003c\/li\u003e\n\u003cli\u003eNever mix the concentrate directly with concentrated PK or silicon products.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cdiv class=\"hcs-specs\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eCalcium and magnesium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKey Elements\u003c\/th\u003e\n\u003ctd\u003eCalcium, magnesium, nitrogen, iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlso Contains\u003c\/th\u003e\n\u003ctd\u003eAmino acids, humic acids, plant extracts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003ctd\u003eCoco, heavy PK feeding, peak flowering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e300ml, 1 litre, 5 litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Ionic","offers":[{"title":"1 Litre","offer_id":53446970835210,"sku":null,"price":19.49,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":53446970867978,"sku":null,"price":59.49,"currency_code":"GBP","in_stock":true},{"title":"300ml","offer_id":53446970900746,"sku":null,"price":8.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/ionic-cal-mag-pro-300ml-1.jpg?v=1785337951","url":"https:\/\/hydrocropshop.co.uk\/products\/ionic-cal-mag-pro","provider":"Hydro Crop Shop","version":"1.0","type":"link"}