{"product_id":"grotek-cal-max","title":"Grotek Cal-Max","description":"\u003ch2\u003eCorrect deficiencies and pre-charge coco in one application\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eGrotek Cal-Max\u003c\/strong\u003e is built to bring nutrient-stressed plants back quickly, combining fast-acting nitrogen with calcium and chelated iron to re-green foliage and restore vigour after a deficiency, humidity spike or period of rapid growth. It is a particular favourite for coco coir growers, who use it to pre-charge fresh coco before planting and offset coir's naturally imbalanced cation exchange.\u003c\/p\u003e\u003cp\u003eBecause calcium becomes a limiting factor during high temperature or high humidity even when there's enough in the root zone, Cal-Max is also used as a foliar spray to get calcium moving through the plant when uptake through the roots is struggling to keep pace.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrects common nutrient deficiencies\u003c\/strong\u003e fast, via nitrogen, calcium and chelated iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent for pre-charging coco coir\u003c\/strong\u003e before planting\u003c\/li\u003e\n\u003cli\u003eUsable as a \u003cstrong\u003efoliar spray or root drench\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHelps plants cope with \u003cstrong\u003ehigh temperature and humidity\u003c\/strong\u003e stress\u003c\/li\u003e\n\u003cli\u003eChelated iron for lush, fast green-up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil\/soilless:\u003c\/strong\u003e 5ml per 4L water, use as required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater culture:\u003c\/strong\u003e 5–8ml per 4L water, use as required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoliar:\u003c\/strong\u003e 10ml per 4L water, use as required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003cp\u003e\u003cstrong\u003eGuaranteed analysis:\u003c\/strong\u003e Total Nitrogen (N) 2.0%, Calcium (Ca) 3.0%, Magnesium (Mg) 1.0%, Chelated Iron (Fe) 0.1%, EDTA 0.68%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDerived from:\u003c\/strong\u003e Calcium nitrate, calcium chloride, magnesium nitrate, iron EDTA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrow phase:\u003c\/strong\u003e Vegetative and flower\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible systems:\u003c\/strong\u003e Hydroponics, soilless (peat\/coco)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Grotek","offers":[{"title":"1L","offer_id":53500727525642,"sku":"NUT-GROT-CALMX-01","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"4L","offer_id":53526282862858,"sku":null,"price":38.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/cal-max.avif?v=1786377721","url":"https:\/\/hydrocropshop.co.uk\/products\/grotek-cal-max","provider":"Hydro Crop Shop","version":"1.0","type":"link"}