{"product_id":"bloom-yellow-bottles-cal-mag-calcium-magnesium","title":"Bloom Yellow Bottles - Cal-Mag | Calcium \u0026 Magnesium","description":"\u003ch3\u003eBloom Yellow Bottles - Cal-Mag\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eBloom Yellow Bottles Cal-Mag\u003c\/strong\u003e is a concentrated \u003cstrong\u003ecalcium and magnesium supplement\u003c\/strong\u003e designed to support healthy plant growth, strengthen cell walls and maintain efficient photosynthesis. Part of the \u003cstrong\u003eBloom Advanced Floriculture\u003c\/strong\u003e nutrient range, this liquid additive supplies two essential secondary macronutrients alongside chelated iron and zinc, helping growers maintain balanced plant nutrition throughout the growing cycle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCalcium\u003c\/strong\u003e plays an important role in cell wall development and nutrient transport, while \u003cstrong\u003emagnesium\u003c\/strong\u003e is a key component of chlorophyll, which plants need for photosynthesis. Bloom Cal-Mag helps maintain an adequate supply of these nutrients during both \u003cstrong\u003evegetative growth and flowering\u003c\/strong\u003e, supporting healthy foliage and overall plant development.\u003c\/p\u003e\n\n\u003cp\u003eParticularly useful for growers using \u003cstrong\u003esoft water, reverse osmosis water or coco coir\u003c\/strong\u003e, Bloom Yellow Bottles Cal-Mag can help address insufficient calcium and magnesium availability. Its concentrated formula is suitable for \u003cstrong\u003ehydroponics, coco and soil cultivation\u003c\/strong\u003e, making it a versatile nutrient supplement for indoor grow tents, grow rooms, greenhouses and outdoor gardens.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentrated calcium and magnesium supplement\u003c\/strong\u003e designed to support balanced plant nutrition.\u003c\/li\u003e\n\u003cli\u003eSupplies \u003cstrong\u003ecalcium\u003c\/strong\u003e to support cell wall formation, structural development and nutrient transport.\u003c\/li\u003e\n\u003cli\u003eProvides \u003cstrong\u003emagnesium\u003c\/strong\u003e, an essential component of chlorophyll required for photosynthesis.\u003c\/li\u003e\n\u003cli\u003eContains \u003cstrong\u003ecalcium nitrate and magnesium nitrate\u003c\/strong\u003e as sources of essential plant nutrients.\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003echelated iron and zinc\u003c\/strong\u003e to provide additional micronutrient support.\u003c\/li\u003e\n\u003cli\u003eHelps prevent or correct plant health problems associated with inadequate \u003cstrong\u003ecalcium and magnesium\u003c\/strong\u003e availability.\u003c\/li\u003e\n\u003cli\u003eSupports healthy green foliage by maintaining the magnesium supply required for \u003cstrong\u003echlorophyll production\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eParticularly beneficial when using \u003cstrong\u003esoft water or reverse osmosis (RO) water\u003c\/strong\u003e, which may contain low levels of calcium and magnesium.\u003c\/li\u003e\n\u003cli\u003eSuitable for \u003cstrong\u003ecoco coir growing\u003c\/strong\u003e, where calcium and magnesium supplementation may be necessary depending on the substrate and feeding programme.\u003c\/li\u003e\n\u003cli\u003eSupports nutrient availability during flowering, including the plant's use of \u003cstrong\u003ephosphorus and potassium\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSuitable for application throughout the \u003cstrong\u003evegetative and flowering stages\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCan be used with the \u003cstrong\u003eBloom Advanced Floriculture base nutrient range\u003c\/strong\u003e without automatically reducing the recommended base fertiliser application.\u003c\/li\u003e\n\u003cli\u003eSuitable for \u003cstrong\u003erecirculating hydroponics, run-to-waste irrigation and soil cultivation\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eManufacturer-listed general application rate of \u003cstrong\u003e1ml per litre\u003c\/strong\u003e of nutrient solution.\u003c\/li\u003e\n\u003cli\u003eSuitable for indoor and outdoor cultivation, including \u003cstrong\u003ehydroponic grow tents, grow rooms and greenhouses\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAvailable in \u003cstrong\u003e300ml, 1L, 2.5L, 15L and 25L\u003c\/strong\u003e sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufactured in Australia\u003c\/strong\u003e as part of the Bloom Yellow Bottles nutrient range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBloom Yellow Bottles - Cal-Mag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBloom Yellow Bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBloom Advanced Floriculture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLiquid calcium and magnesium nutrient supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eForm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConcentrated liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCalcium and magnesium supplementation for plant growth and development\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Nutrients\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCalcium and magnesium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdditional Micronutrients\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChelated iron and chelated zinc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeclared Nutrient Sources\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCalcium nitrate, magnesium nitrate, chelated iron and chelated zinc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNPK Analysis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.8-0-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct pH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8–10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGeneral Application Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1ml per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem-Specific Application Rates\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRefer to the relevant Bloom Yellow Bottles feeding schedule\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Growth Stages\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVegetative growth and flowering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThroughout vegetative growth and flowering, stopping at the final flush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable Growing Media\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSoil, coco coir and hydroponic substrates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable Growing Systems\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRecirculating hydroponics, run-to-waste irrigation and soil cultivation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuitable for supplementing soft water and reverse osmosis water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300ml, 1L, 2.5L, 15L and 25L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Manufacture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAustralia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho It’s For\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eBloom Yellow Bottles Cal-Mag\u003c\/strong\u003e is ideal for growers looking to maintain an adequate supply of \u003cstrong\u003ecalcium and magnesium\u003c\/strong\u003e throughout the plant growth cycle. It is particularly useful for \u003cstrong\u003ehydroponic growers\u003c\/strong\u003e using soft or reverse osmosis water, where the natural mineral content may be insufficient to meet plant requirements.\u003c\/p\u003e\n\n\u003cp\u003eGrowers cultivating in \u003cstrong\u003ecoco coir\u003c\/strong\u003e can also benefit from a dedicated Cal-Mag supplement, as calcium and magnesium availability can be influenced by the properties of the growing medium. Soil gardeners may use Bloom Cal-Mag where their existing nutrient programme or growing conditions do not provide adequate levels of these essential minerals.\u003c\/p\u003e\n\n\u003cp\u003eThe product is suitable for hobby growers and commercial cultivators operating \u003cstrong\u003eindoor grow tents, grow rooms, greenhouses and outdoor gardens\u003c\/strong\u003e. It is especially relevant to growers following the \u003cstrong\u003eBloom Advanced Floriculture feeding programme\u003c\/strong\u003e who want additional secondary macronutrient support during vegetative growth and flowering.\u003c\/p\u003e\n\n\u003ch3\u003eHow To Use\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eApplication Timing:\u003c\/strong\u003e Use \u003cstrong\u003eBloom Yellow Bottles Cal-Mag\u003c\/strong\u003e throughout the \u003cstrong\u003evegetative and flowering stages\u003c\/strong\u003e as part of your regular feeding programme. The manufacturer's UK guidance recommends stopping application when the final flush begins, typically during the last \u003cstrong\u003e1–2 weeks\u003c\/strong\u003e before harvest.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDosage:\u003c\/strong\u003e The manufacturer lists a general application rate of \u003cstrong\u003e1ml per litre\u003c\/strong\u003e of nutrient solution. Application rates can vary according to the growing system, water quality and feeding method, so consult the appropriate \u003cstrong\u003eBloom Yellow Bottles feeding schedule\u003c\/strong\u003e for your setup.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMixing:\u003c\/strong\u003e Measure the required quantity of Cal-Mag for your water volume and add it to the nutrient reservoir or watering container. Mix thoroughly before completing your normal nutrient preparation. Follow the manufacturer's feeding schedule and avoid mixing concentrated nutrient products directly together.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Apply the prepared solution through your usual \u003cstrong\u003ehydroponic irrigation system\u003c\/strong\u003e or soil watering method. Bloom Cal-Mag is a supplementary nutrient product and should be used alongside a suitable \u003cstrong\u003ebase fertiliser\u003c\/strong\u003e rather than as a complete plant feed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSoft Water and RO Water:\u003c\/strong\u003e When using \u003cstrong\u003esoft water or reverse osmosis water\u003c\/strong\u003e, assess the calcium and magnesium contribution from your existing nutrients before deciding how much additional supplementation is required. Follow the appropriate feeding schedule and monitor the final \u003cstrong\u003eEC and pH\u003c\/strong\u003e of the prepared solution.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMonitoring Plant Health:\u003c\/strong\u003e Observe foliage and new growth for signs of nutrient imbalance. Yellowing, spotting and abnormal leaf development can have several causes, so check water quality, nutrient strength and root-zone conditions before increasing the Cal-Mag dosage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFinal Flush:\u003c\/strong\u003e Discontinue Bloom Cal-Mag when beginning the final flush, following the manufacturer's feeding guidance for your crop and growing method.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStorage and Handling:\u003c\/strong\u003e Keep the container securely closed and follow the storage and safety instructions printed on the product label. Always measure accurately and use the recommended application rate for your growing system.\u003c\/p\u003e","brand":"Bloom Yellow Bottles","offers":[{"title":"300ml","offer_id":59587129835852,"sku":"BYB-CALMAG-300ML","price":13.99,"currency_code":"GBP","in_stock":true},{"title":"1L","offer_id":59587129868620,"sku":"BYB-CALMAG-1L","price":20.99,"currency_code":"GBP","in_stock":true},{"title":"2.5L","offer_id":59587129901388,"sku":"BYB-CALMAG-2.5L","price":45.99,"currency_code":"GBP","in_stock":true},{"title":"15L","offer_id":59587129934156,"sku":"BYB-CALMAG-15L","price":236.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0789\/3044\/4620\/files\/bloom-yellow-bottle-1L-calmag.jpg?v=1793114311","url":"https:\/\/hytachydroponics.com\/products\/bloom-yellow-bottles-cal-mag-calcium-magnesium","provider":"Hytec Horticulture","version":"1.0","type":"link"}