{"product_id":"cal-mag-pro-series-hydroponic-nutrient-supplement-coco-ready","title":"Cal\/Mag Pro Series Hydroponic Nutrient Supplement - Coco Ready","description":"\u003cp\u003eIn this review of the Cal\/Mag Pro Series supplement the bottom line is clear: growers who use coco coir or hydroponic systems and need a naturally derived calcium and magnesium boost will find this product worthwhile. Designed with an ideal 4:1 calcium to magnesium ratio and made from 100% naturally sourced ingredients, the formula targets common deficiencies and helps promote stronger stems and healthier leaves. The reviewer found it most valuable as a coco pre-treatment and as a routine supplement during growth stages, though powder handling can require care.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure natural formula:\u003c\/strong\u003e Made from 100% naturally sourced ingredients to supply essential micro and macro elements without industrial byproducts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Ca:Mg ratio:\u003c\/strong\u003e The 4:1 calcium to magnesium balance helps prevent common nutrient deficiencies and is tuned for coco coir use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoco pre-treatment:\u003c\/strong\u003e Functions effectively to flush excess sodium and chloride from coco coir before planting, improving initial media quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced uptake:\u003c\/strong\u003e Promotes strong stems and healthy leaves by supporting efficient nutrient absorption throughout the growth cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrower-designed quality:\u003c\/strong\u003e Created by growers in California and backed by industry support, giving practical formulation and guidance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy-to-use system:\u003c\/strong\u003e Works as a straightforward supplement within a feeding schedule for both beginners and experienced growers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Cal\/Mag Pro Series is best for hobby and small commercial growers who use \u003cstrong\u003ecoco coir or hydroponic setups\u003c\/strong\u003e and want a naturally derived calcium and magnesium supplement to prevent blossom-end rot, tip burn, and weak stems. It is especially helpful for growers who pre-treat coco to remove excess salts before planting.\u003c\/p\u003e\n\u003cp\u003eLess suitable are growers who require a completely dust-free, instantly dissolving powder; some customers reported the product can be clumpy and take extra mixing time. If you need a perfectly free-flowing granular product out of the bag, consider mixes formulated for immediate solubility.\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\u003eNatural ingredient base supplies essential micro and macro elements without industrial byproducts.\u003c\/li\u003e\n\u003cli\u003eFormulated 4:1 calcium to magnesium ratio that is favorable for \u003cstrong\u003ecoco coir\u003c\/strong\u003e and reduces deficiency risks.\u003c\/li\u003e\n\u003cli\u003eEffective coco pre-treatment action that flushes sodium and chloride from media.\u003c\/li\u003e\n\u003cli\u003eDesigned by growers with accessible customer support for practical use guidance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowder quality draws mixed feedback; the product can be dry and clumpy and may require extra stirring to dissolve.\u003c\/li\u003e\n\u003cli\u003eNot marketed as a complete all-in-one nutrient; it is a supplement intended to work within a feeding regime.\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\u003eCalcium and Magnesium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003ePowdered nutrient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSoil, hydroponic systems, coco coir\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium:Magnesium ratio\u003c\/td\u003e\n\u003ctd\u003e4:1 (ideal for coco)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSource\u003c\/td\u003e\n\u003ctd\u003e100% naturally sourced ingredients\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage size\u003c\/td\u003e\n\u003ctd\u003e60oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand family\u003c\/td\u003e\n\u003ctd\u003eGrow Strong Industries (Lotus Nutrients)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Cal\/Mag Pro Series is a solid value for growers using \u003cstrong\u003ecoco coir or hydroponics\u003c\/strong\u003e who want a naturally derived calcium and magnesium supplement tuned to prevent common deficiencies. It performs well as a coco pre-treatment and during growth phases, though users should plan for some extra mixing time because the powder can clump. For the targeted use cases it offers practical benefits and good formulation provenance.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this in soil mixes?\u003c\/strong\u003e\u003cbr\u003eYes, it is compatible with soil as a supplemental calcium and magnesium source, though its 4:1 ratio is especially beneficial in coco and hydroponic media.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I handle clumpy powder?\u003c\/strong\u003e\u003cbr\u003eMix thoroughly in warm water and allow a short soak with stirring; agitation and time will improve dissolution and reduce residue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this safe for seedlings?\u003c\/strong\u003e\u003cbr\u003eIt can be used across growth stages, but follow a conservative dosing schedule for seedlings and increase as plants mature to avoid overfeeding.\u003c\/p\u003e","brand":"Lotus Nutrients","offers":[{"title":"Default Title","offer_id":48671865831643,"sku":"B07CJ1533V","price":57.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71jyhuJ-7oL._AC_SL1500.jpg?v=1778703404","url":"https:\/\/gearmusthave.com\/products\/cal-mag-pro-series-hydroponic-nutrient-supplement-coco-ready","provider":"GearMustHave","version":"1.0","type":"link"}