{"product_id":"emerald-harvest-cal-mag-2-0-0","title":"Emerald Harvest Cal-Mag 2-0-0 with Kelp","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest Cal-Mag 2-0-0 is a kelp-enhanced calcium and magnesium supplement formulated to prevent or correct mineral deficiencies while supporting healthy roots, strong plant tissue, green foliage, and efficient photosynthesis. It is especially beneficial for plants grown in coco coir, hydroponic media, or other conditions where calcium and magnesium availability may be limited.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIn addition to essential minerals, Emerald Harvest Cal-Mag contains natural kelp extract—a source of proteins, amino acids, biocatalysts, and naturally occurring plant compounds. This specialized formula supports nutrient uptake, root development, plant vigor, and productive flowering without replacing a complete base fertilizer.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCalcium and magnesium support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Helps prevent or correct two of the most common mineral deficiencies encountered by growers.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eStronger plant tissue:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Calcium supports cell formation, cell-wall strength, membrane stability, and healthy new growth.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGreener foliage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Magnesium is central to chlorophyll production and supports efficient photosynthesis.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eKelp-enhanced formula:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supplies naturally occurring proteins, amino acids, phytohormones, and biocatalysts.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eImproved nutrient availability:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Amino acids found in kelp can function as natural chelators that support mineral uptake.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eRoot-development support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Kelp-derived auxins help support active root tips and extensive root development.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCoco coir compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Helps compensate for calcium and magnesium interactions commonly encountered in coco.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBroad growing-media versatility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Suitable for hydroponics, coco coir, soilless mixes, and other growing media.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFull-cycle flexibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e May be used as needed from early vegetative growth through late flowering.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eGuaranteed Analysis and Ingredients\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eN-P-K:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 2-0-0\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTotal nitrogen:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 2%\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCalcium:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 3%\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMagnesium:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0.5%\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDerived from:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ammonium calcium nitrate double salt, magnesium sulfate, calcium acetate, magnesium acetate, and kelp extract\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProduct type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Liquid calcium, magnesium, nitrogen, and kelp supplement\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest Cal-Mag is a supplemental formula and should be used alongside an appropriate base nutrient program.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eHow Calcium Supports Plants\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCalcium performs several essential structural and metabolic functions:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSupports the formation of new cells\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps strengthen cell walls and plant tissue\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupports healthy root and shoot development\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps regulate the transport of other nutrients\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eActivates certain enzymes and natural plant processes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAssists with nitrogen utilization\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupports healthy new growth in rapidly developing plants\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause calcium has limited mobility within plants, consistent availability is particularly important during active root, shoot, flower, and fruit development.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eHow Magnesium Supports Plants\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMagnesium forms the central atom within the chlorophyll molecule, making it essential for green foliage and photosynthesis. It also supports:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eLight-energy conversion\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlant respiration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnzyme activity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePhosphorus utilization\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIron utilization\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCarbohydrate production and movement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOverall plant metabolism\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInsufficient magnesium may appear as interveinal yellowing, often beginning on older leaves. Similar symptoms can also result from improper pH, excessive EC, root stress, or nutrient lockout.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBenefits of Kelp Extract\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest Cal-Mag includes natural kelp extract to provide more than mineral nutrition. Kelp supplies naturally occurring:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAuxins:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Support root-tip and plant growth.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCytokinins:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Support cell division, branching, and plant development.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAmino acids:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Function as natural chelators that can improve nutrient availability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProteins and biocatalysts:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Support plant metabolism and overall vigor.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTrace compounds:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Complement the calcium and magnesium mineral formula.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese components make Emerald Harvest Cal-Mag a well-rounded supplement for plants experiencing increased mineral demand or challenging growing conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eHow to Use\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMix \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2–5 mL per gallon of water\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, as needed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePreventive Application:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Begin near the lower end of the range when source water or growing media provide limited calcium and magnesium.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCorrective Application:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gradually increase within the recommended range while monitoring plant response and total nutrient strength.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eApplication Period:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Use as needed from early vegetative growth through late flowering.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePreferred Timing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Emerald Harvest recommends applying Cal-Mag on water-only days.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSturdy Stalk Programs:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Do not use Cal-Mag and Emerald Harvest Sturdy Stalk during the same watering.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe appropriate dosage depends on source-water mineral content, base fertilizer, growing medium, plant demand, growth stage, and existing EC or PPM.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eRecommended Mixing Instructions\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eShake the container thoroughly before measuring.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFill the watering container or reservoir with fresh water.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdd Emerald Harvest Cal-Mag at the appropriate rate.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMix thoroughly before introducing any other compatible products.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdd additional nutrients or supplements individually when required by your feeding program.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMix completely between each addition.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck the final EC or PPM and pH before application.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNever combine Cal-Mag directly with undiluted nutrient concentrates. Do not add Emerald Harvest Sturdy Stalk to the same watering solution.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCoco Coir and Hydroponic Use\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCoco coir can hold calcium and magnesium on its exchange sites, reducing the amount immediately available to plant roots. Supplemental Cal-Mag can help maintain adequate mineral availability and reduce the likelihood of deficiency symptoms.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCal-Mag may also be useful with reverse osmosis water, distilled water, rainwater, or other low-mineral water sources. Begin conservatively and monitor the completed nutrient solution because the necessary amount depends on the base fertilizer and source-water profile.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eGrowing Media and System Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest Cal-Mag is suitable for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCoco coir\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHydroponic growing media\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSoilless mixes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRecirculating hydroponic systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDrain-to-waste systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDeep water culture\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDrip irrigation and fertigation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFlood-and-drain systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRockwool\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eContainer gardens and soil applications\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAdjust the application rate according to source-water quality, growing medium, system design, and plant response.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eUsing It With Other Emerald Harvest Products\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest Cal-Mag is formulated to complement the brand’s Grow, Micro, Bloom and Cali Pro base nutrient programs. Because these base fertilizers already supply calcium, magnesium, and other essential elements, use supplemental Cal-Mag only when the growing medium, source water, or plant response indicates an increased need.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen using multiple supplements, monitor the total EC or PPM to prevent overfeeding. Do not combine Cal-Mag and Sturdy Stalk in the same watering; alternate their applications according to the Emerald Harvest feeding chart.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Usage Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUse Cal-Mag as a supplement, not as a complete base fertilizer.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApply between 2 and 5 mL per gallon as needed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRecommended for water-only days.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not use Cal-Mag and Sturdy Stalk in the same watering.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvoid unnecessary supplementation when source water and base nutrients already supply adequate minerals.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm that deficiency symptoms are not being caused by improper pH, excessive EC, overwatering, or root-zone stress.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStore tightly sealed under normal, temperature-controlled conditions.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerald Harvest","offers":[{"title":"Qt","offer_id":44303832154276,"sku":"723950","price":19.8,"currency_code":"USD","in_stock":true},{"title":"Gallon","offer_id":44303832219812,"sku":"723954","price":48.1,"currency_code":"USD","in_stock":true},{"title":"2.5 Gallon","offer_id":44303832252580,"sku":"723955","price":98.34,"currency_code":"USD","in_stock":false},{"title":"6 Gallon","offer_id":44303832285348,"sku":"723956","price":168.2,"currency_code":"USD","in_stock":false},{"title":"15 Gallon","offer_id":44813345521828,"sku":"","price":365.9,"currency_code":"USD","in_stock":false},{"title":"55 Gallon","offer_id":44303832318116,"sku":"723994","price":1370.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1298\/4199\/products\/Emerald-Harvest_-Cal-Mag_-qt-Emerald-Harvest-1671031890.jpg?v=1683703712","url":"https:\/\/www.gardensupplyguys.com\/products\/emerald-harvest-cal-mag-2-0-0","provider":"GARDEN SUPPLY GUYS","version":"1.0","type":"link"}