{"product_id":"calcium-nitrate-15-5-0-0-fertilizer-greenhouse-grade-plant-food","title":"Calcium Nitrate 15.5-0-0 Fertilizer - Greenhouse Grade Plant Food","description":"\u003cp\u003eIn this review of Cz Garden Supply Calcium Nitrate 15.5-0-0, the bottom line is simple: this is a straightforward, highpurity water soluble nitrogen and calcium source for growers who need reliable calcium supplementation and steady nitrogen delivery. It is best for hobbyists and small commercial growers using hydroponics, drip irrigation, or soil who want a greenhouse grade product that dissolves cleanly. The product stands out for its purity and usefulness as a supplemental feed to prevent calcium deficiencies, and the resealable pouch makes repeated dosing easy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh purity formulation:\u003c\/strong\u003e The greenhouse grade blend dissolves cleanly into solution so it does not leave an oily skim that can clog irrigation lines or sit on roots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen plus calcium:\u003c\/strong\u003e With 15.5% nitrogen and 19% calcium, it supports vigorous green leafy growth while supplying calcium for fruit and flower development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater soluble:\u003c\/strong\u003e Fully water soluble for use in hydroponics, DWC, NFT, drip systems, or soil feeding without gritty residue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e321 feeding schedule compatible:\u003c\/strong\u003e Works with common feeding routines and integrates easily with drip irrigation and flood and drain systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResealable packaging:\u003c\/strong\u003e The heavy duty resealable pouch keeps remaining product dry and allows precise pouring for repeat applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is aimed at indoor gardeners, hydroponic growers, and backyard vegetable producers who need a dependable calcium boost in addition to steady nitrogen. It is particularly useful for tomato growers concerned about blossom end rot and for anyone running drip or recirculating systems where clean, fully soluble nutrients are essential.\u003c\/p\u003e\n\u003cp\u003eGrowers who rely on complex allinone nutrient lines or who need micronutrient blends should look elsewhere, since this is a focused calcium nitrate fertilizer and not a complete multipart nutrient. Users seeking organically certified calcium sources should confirm suitability for their program, as this is presented as a high purity, greenhouse grade mineral fertilizer.\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\u003eDissolves nicely and stays clear, helping avoid clogged emitters and residue on roots.\u003c\/li\u003e\n\u003cli\u003eProvides both calcium and nitrogen for balanced vegetative growth and stronger fruit set.\u003c\/li\u003e\n\u003cli\u003eWorks across hydroponic setups and soil applications with a simple feeding schedule.\u003c\/li\u003e\n\u003cli\u003eResealable pouch makes storage and measuring convenient for repeated use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFocused formula means growers still need a complete nutrient program with other macronutrients and micronutrients.\u003c\/li\u003e\n\u003cli\u003eSome customers reported mixed results for rot prevention, so outcomes may vary with overall nutrient balance and plant health.\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 Nitrate fertilizer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrogen content\u003c\/td\u003e\n\u003ctd\u003e15.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium content\u003c\/td\u003e\n\u003ctd\u003e19%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\u003c\/td\u003e\n\u003ctd\u003eWater soluble, greenhouse grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eResealable heavy duty pouch (18LB available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended uses\u003c\/td\u003e\n\u003ctd\u003eHydroponics, drip irrigation, soil, coco, DWC, NFT, flood \u0026amp; drain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eCz Garden Supply Calcium Nitrate 15.5-0-0 is a practical, high purity calcium and nitrogen source for growers who need a clean dissolving supplement. It is good value for hobbyists and small commercial setups that already manage other nutrients and want a reliable calcium feed to reduce deficiencies and promote leafy growth and fruit development.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this be used in hydroponic systems?\u003c\/strong\u003e\u003cbr\u003eYes. It is fully water soluble and suitable for hydroponics, DWC, NFT, and drip systems when used as part of a complete feeding program.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it prevent blossom end rot on tomatoes?\u003c\/strong\u003e\u003cbr\u003eIt supplies calcium which helps reduce blossom end rot risk, but results depend on overall nutrient balance and watering practices.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is it packaged for storage?\u003c\/strong\u003e\u003cbr\u003eIt comes in a heavy duty resealable pouch designed to keep unused product dry and easy to pour for later use.\u003c\/p\u003e","brand":"Cz Garden Supply","offers":[{"title":"Default Title","offer_id":48225167999195,"sku":"B0CYFD5JRQ","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71k-2JQ8uGL._SL1500.jpg?v=1770826238","url":"https:\/\/gearmusthave.com\/products\/calcium-nitrate-15-5-0-0-fertilizer-greenhouse-grade-plant-food","provider":"GearMustHave","version":"1.0","type":"link"}