{"product_id":"envy-calmag-fe-4-0-0-professional-grade-liquid-plant-food","title":"ENVY CalMag+ Fe (4-0-0) Professional Grade Liquid Plant Food","description":"\u003cp\u003eIn this review of ENVY CalMag+ Fe (4-0-0), the bottom line is simple: growers using reverse osmosis water, coco-coir, or hydroponic systems will appreciate a concentrated, plant-friendly calcium source that avoids calcium chloride. The reviewer found this formula especially useful for preventing blossom end rot in tomatoes and peppers and for correcting nutrient lock up in coir, making it a practical supplemental product for growers who need reliable calcium, magnesium and iron without upsetting their base nutrient program.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSuperior Cal-Mag source:\u003c\/strong\u003e Calcium is supplied as calcium nitrate rather than calcium chloride, which reduces the risk of chloride buildup and is gentler on hydro systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFormulated for R.O. water:\u003c\/strong\u003e Designed to replenish minerals stripped by reverse osmosis, restoring calcium and magnesium levels for healthier plant growth.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrevents blossom end rot:\u003c\/strong\u003e Provides highly absorbable calcium to tomatoes and peppers to reduce the leaf yellowing and fruit rot caused by calcium deficiency.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCorrects coir lock up:\u003c\/strong\u003e Concentrated formulation helps replace nutrients that become bound in coco-coir fibers so plants can access them again.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompatible with nutrient lines:\u003c\/strong\u003e Works alongside hydroponic, soil and coir nutrient systems and performs best when paired with ENVY A \u0026amp; B base nutrients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is aimed at hobbyist and professional growers who use reverse osmosis water, hydroponic systems, or coco-coir and need a dependable supplemental source of calcium, magnesium and iron. Home gardeners growing tomatoes, peppers or other fruiting crops will benefit from its ability to prevent blossom end rot and correct nutrient lock up.\u003c\/p\u003e\n\u003cp\u003eGrowers who already have balanced mains water and do not see signs of calcium deficiency may not need a concentrated CalMag supplement. Those seeking a complete base nutrient should treat this as a supplement rather than a replacement for core A \u0026amp; B nutrient lines.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eProvides calcium as calcium nitrate, which is gentler on plants and hydro systems.\u003c\/li\u003e\n \u003cli\u003eEffective at preventing blossom end rot in tomatoes and peppers when deficiency is the cause.\u003c\/li\u003e\n \u003cli\u003eReplenishes minerals removed by R.O. water and helps free nutrients locked in coco-coir.\u003c\/li\u003e\n \u003cli\u003eCustomers report good value, ease of use and measurable plant health improvements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSold as a supplement, so growers still need a compatible base nutrient regimen for complete feeding.\u003c\/li\u003e\n \u003cli\u003eConcentrated formula requires careful dosing to avoid over-application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eLiquid CalMag supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eN-P-K\u003c\/td\u003e\n\u003ctd\u003e4-0-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKey minerals\u003c\/td\u003e\n\u003ctd\u003eCalcium (as calcium nitrate), Magnesium, Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIntended use\u003c\/td\u003e\n\u003ctd\u003eHydroponic, soil and coco-coir supplementation\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWorks with all nutrient lines; optimal with ENVY A \u0026amp; B\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePrimary benefit\u003c\/td\u003e\n\u003ctd\u003ePrevents blossom end rot and corrects nutrient lock up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eENVY CalMag+ Fe (4-0-0) is a focused supplemental product that delivers plant-friendly calcium and supporting minerals without calcium chloride, making it a smart choice for R.O. users, coir growers and anyone fighting blossom end rot. It pairs best with a complete base nutrient system and offers solid value for growers who need a reliable CalMag boost.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this be used with reverse osmosis water?\u003c\/strong\u003e\u003cbr\u003eYes. It is formulated specifically to replace minerals stripped by R.O. systems and restore calcium and magnesium levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it prevent blossom end rot in tomatoes?\u003c\/strong\u003e\u003cbr\u003eWhen blossom end rot is caused by calcium deficiency, supplying absorbable calcium as in this formula helps prevent and correct the condition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it compatible with other nutrient brands?\u003c\/strong\u003e\u003cbr\u003eYes. It works with most hydroponic, soil and coir nutrient lines but is recommended as a supplement alongside a complete base nutrient program.\u003c\/p\u003e","brand":"ENVY","offers":[{"title":"Default Title","offer_id":48254619877595,"sku":"B08L8C53Q1","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/814CaJUyatL._AC_SL1500_d4f890fe-25cf-4091-be48-6b8316125004.jpg?v=1778329753","url":"https:\/\/gearmusthave.com\/products\/envy-calmag-fe-4-0-0-professional-grade-liquid-plant-food","provider":"GearMustHave","version":"1.0","type":"link"}