{"title":"Ionic Nutrients - 20% Off | July 2026 Sale","description":"\u003cdiv style=\"background:#eef7ff;border-left:4px solid #e63946;border-radius:0 8px 8px 0;padding:18px 22px;margin-bottom:20px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:1.05em;font-weight:700;color:#c1121f;\"\u003e🔥 20% Off Ionic Nutrients — Ends 1st August 2026\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:.95em;line-height:1.6;\"\u003eFor a limited time only, save 20% across Ionic Cal-Mag Pro and Ionic PK Boost. Whether you're stocking up mid-cycle or planning your next run, this is the best price you'll see on these products all year. \u003cstrong\u003eOffer ends 1st August 2026\u003c\/strong\u003e — don't leave it too late.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"ionic-cal-mag-pro-calcium-magnesium-supplement","title":"Ionic Cal-Mag Pro Calcium Magnesium Supplement","description":"\u003cdiv style=\"background: #eef7ff; border-left: 4px solid #e63946; border-radius: 0 8px 8px 0; padding: 18px 22px; margin-bottom: 26px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-size: 1.05em; font-weight: bold; color: #c1121f;\"\u003e🔥 20% OFF — This Month Only\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: .95em; line-height: 1.6;\"\u003eSave 20% on Ionic Cal-Mag Pro right now. \u003cstrong\u003eThis offer ends 1st August 2026\u003c\/strong\u003e and won't be repeated. Once it's gone, the price goes back up — don't be the grower who missed it. Grab yours before stocks run out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eIonic Cal-Mag Pro\u003c\/strong\u003e is a concentrated calcium and magnesium supplement designed to prevent and correct one of the most common problems in fast-growing plants: Cal-Mag deficiency.\u003c\/p\u003e\n\u003cp\u003eWhen plants are growing hard, especially during heavy flowering, they can burn through calcium and magnesium quickly. If they run short, growth can slow down, leaves can pale, yellowing may appear between the veins, and calcium-related spotting can start showing across the plant.\u003c\/p\u003e\n\u003cp\u003eIonic Cal-Mag Pro gives your plants a fast, usable supply of \u003cstrong\u003eCalcium, Magnesium, Nitrogen, Iron, amino acids, humic acids and organic plant extracts\u003c\/strong\u003e, helping keep growth strong, healthy and productive when demand is at its highest.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCalcium and magnesium supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoco, soil, hydroponics and all grow styles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrevention Dose\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5ml per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCorrection Dose\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\u003eUse With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuality base nutrients\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy Use Ionic Cal-Mag Pro?\u003c\/h2\u003e\n\u003cp\u003eCalcium and magnesium are secondary nutrients, but there is nothing secondary about the problems they cause when plants run short. Deficiencies can hit hard, especially in coco, soft water areas, RO water setups, and high-performance flowering programs.\u003c\/p\u003e\n\u003cp\u003eCoco can hold onto calcium, leaving less available for the plant. Heavy potassium use from PK boosters can also interfere with calcium and magnesium uptake, which is exactly when your plants need everything running smoothly.\u003c\/p\u003e\n\u003cp\u003eIonic Cal-Mag Pro helps protect against those issues so your final yield does not suffer because of avoidable deficiencies.\u003c\/p\u003e\n\u003ch2\u003eCommon Signs Of Cal-Mag Deficiency\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eYellowing between leaf veins, often linked with magnesium deficiency\u003c\/li\u003e\n\u003cli\u003eSmall dark brown spots with sharper edges, often linked with calcium deficiency\u003c\/li\u003e\n\u003cli\u003eSluggish growth during key growth or bloom stages\u003c\/li\u003e\n\u003cli\u003eGeneral paling or yellowing of leaves\u003c\/li\u003e\n\u003cli\u003eWeak overall plant performance when demand is high\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHelps prevent calcium and magnesium deficiencies\u003c\/li\u003e\n\u003cli\u003eCan be used to correct existing Cal-Mag issues\u003c\/li\u003e\n\u003cli\u003eIdeal for coco growers\u003c\/li\u003e\n\u003cli\u003eUseful when running PK boosters or high potassium feeds\u003c\/li\u003e\n\u003cli\u003eContains calcium, magnesium, nitrogen and iron\u003c\/li\u003e\n\u003cli\u003eIncludes amino acids, humic acids and organic plant extracts\u003c\/li\u003e\n\u003cli\u003eSuitable for soil, coco and hydroponic systems\u003c\/li\u003e\n\u003cli\u003eHelps support stronger growth and healthier flowering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow To Use Ionic Cal-Mag Pro\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eUse Case\u003c\/th\u003e\n\u003cth\u003eDose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneral prevention\u003c\/td\u003e\n\u003ctd\u003e0.5ml per litre of water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrecting an existing deficiency\u003c\/td\u003e\n\u003ctd\u003e1ml per litre of water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAdd Ionic Cal-Mag Pro to your feed water or reservoir as part of your normal nutrient mix. Always add nutrients and additives one at a time, stirring well between each addition.\u003c\/p\u003e\n\u003cp\u003eNever mix nutrients, boosters or additives together in their concentrated form straight from the bottle.\u003c\/p\u003e\n\u003ch2\u003eBest Used In Coco And Heavy Bloom Feeding\u003c\/h2\u003e\n\u003cp\u003eThis is where Ionic Cal-Mag Pro really earns its keep. Coco growers are more likely to run into calcium and magnesium issues, and plants being pushed hard in bloom can quickly show signs when something is missing.\u003c\/p\u003e\n\u003cp\u003eIf you are using strong base nutrients, PK boosters or growing under powerful lighting, adding a Cal-Mag supplement can be a smart way to keep the plant balanced and avoid silly problems late in the cycle.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy From The Hydro Bros?\u003c\/h2\u003e\n\u003cp\u003eThe Hydro Bros stock Ionic Cal-Mag Pro because it solves a real problem growers see all the time. If your plants are hungry, fast-growing and being pushed hard, this is one of those simple additives that can save a lot of headaches before they cost you yield.\u003c\/p\u003e","brand":"IONIC NUTRIENTS","offers":[{"title":"300ml","offer_id":57211374862709,"sku":"12967","price":7.95,"currency_code":"GBP","in_stock":true},{"title":"1L","offer_id":57211374797173,"sku":"12965","price":16.95,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":57211374829941,"sku":"12966","price":50.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/files\/nutrients-ionic-cal-mag-pro-calcium-magnesium-supplement-1239314317.webp?v=1779230680"},{"product_id":"ionic-pk-boost-pk-14-15","title":"Ionic PK Boost PK 14\/15 Flowering Booster","description":"\u003cdiv style=\"background: #eef7ff; border-left: 4px solid #e63946; border-radius: 0 8px 8px 0; padding: 18px 22px; margin-bottom: 26px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-size: 1.05em; font-weight: bold; color: #c1121f;\"\u003e🔥 20% OFF — This Month Only\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: .95em; line-height: 1.6;\"\u003eSave 20% on Ionic PK Boost right now. \u003cstrong\u003eThis offer ends 1st August 2026\u003c\/strong\u003e and won't be back. Mid-season is the worst time to run short of your PK booster — lock in the saving now before the price goes back up. Limited stock at this price.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eIonic PK Boost (PK 14\/15)\u003c\/strong\u003e is a high-strength flowering booster designed to support heavier flowering, stronger fruit development and improved bloom performance during the most demanding stage of the plant's life cycle.\u003c\/p\u003e\n\u003cp\u003eFormulated with a concentrated blend of phosphorus and potassium, Ionic PK Boost helps plants push energy into flower production when it matters most. Used alongside your regular Ionic Bloom nutrient, it helps support bigger flowers, improved density and stronger overall flowering performance.\u003c\/p\u003e\n\u003cp\u003eWith an NPK of \u003cstrong\u003e0-14-15\u003c\/strong\u003e, this is a serious PK additive built for growers who want to maximise bloom potential without overcomplicating their feeding schedule.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePK flowering booster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNPK\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0-14-15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Dose\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\u003eUse Stage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlowering and fruiting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSoil, coco and hydroponics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAll Ionic Bloom nutrients\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat Does PK Boost Do?\u003c\/h2\u003e\n\u003cp\u003eDuring flowering, plants demand significantly higher levels of phosphorus and potassium to support flower formation, energy transfer and structural development.\u003c\/p\u003e\n\u003cp\u003eIonic PK Boost delivers those key nutrients in a concentrated, plant-available form to help support aggressive blooming and maximise flowering performance during the critical production window.\u003c\/p\u003e\n\u003cp\u003eUsed correctly, PK boosters can help improve:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlower size and density\u003c\/li\u003e\n\u003cli\u003eFruit and flower production\u003c\/li\u003e\n\u003cli\u003ePlant energy during peak bloom\u003c\/li\u003e\n\u003cli\u003eOverall flowering performance\u003c\/li\u003e\n\u003cli\u003eFinal yield potential\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDesigned For Serious Flowering Performance\u003c\/h2\u003e\n\u003cp\u003eIonic PK Boost is quite a powerful bloom additive, which is exactly why growers rate it. It is designed to complement the Ionic Bloom nutrient range without needing massive feeding rates or complicated schedules.\u003c\/p\u003e\n\u003cp\u003eBecause it is already highly concentrated, it should not be combined with other PK boosters or used above the recommended dosage. More PK does not automatically mean more flowers. Overfeeding during bloom is one of the easiest ways to stress plants and reduce performance.\u003c\/p\u003e\n\u003cp\u003eKeep it simple. Use it properly and let the formulation do the work.\u003c\/p\u003e\n\u003ch2\u003eHow To Use Ionic PK Boost\u003c\/h2\u003e\n\u003cp\u003eIonic PK Boost can be used from the first signs of flowering or fruit formation right through until the flush period.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGrowing Method\u003c\/th\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil and Coco\u003c\/td\u003e\n\u003ctd\u003eUse once per week at 1ml\/L alongside your Ionic Bloom nutrient. Adjust EC to 1.5 (CF15).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydroponics\u003c\/td\u003e\n\u003ctd\u003eAdd at 1ml\/L to your reservoir and adjust EC to 2.0 (CF20). Replace nutrient solution weekly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf required, adjust pH after mixing nutrients.\u003c\/p\u003e\n\u003cp\u003eAlways add nutrients and additives to water one at a time, stirring thoroughly between additions. Never mix concentrated nutrients together directly from the bottle.\u003c\/p\u003e\n\u003ch2\u003eWhy Growers Use PK Boosters\u003c\/h2\u003e\n\u003cp\u003eOnce plants enter heavy flowering, demand for phosphorus and potassium increases dramatically. Base nutrients alone can sometimes struggle to fully satisfy that increased demand, especially in fast-growing, high-yield environments.\u003c\/p\u003e\n\u003cp\u003eThat is where a dedicated PK additive comes in. Ionic PK Boost helps bridge that gap, giving plants extra support during peak bloom without completely changing your feeding programme.\u003c\/p\u003e\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePowerful PK 14\/15 flowering booster\u003c\/li\u003e\n\u003cli\u003eSupports larger, denser flowers\u003c\/li\u003e\n\u003cli\u003eDesigned for use during flowering and fruiting\u003c\/li\u003e\n\u003cli\u003eSuitable for soil, coco and hydroponics\u003c\/li\u003e\n\u003cli\u003eWorks alongside all Ionic Bloom nutrients\u003c\/li\u003e\n\u003cli\u003eEasy one-part additive at just 1ml\/L\u003c\/li\u003e\n\u003cli\u003eHelps support stronger bloom performance and final yields\u003c\/li\u003e\n\u003cli\u003eHighly concentrated professional-grade formula\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Buy From The Hydro Bros?\u003c\/h2\u003e\n\u003cp\u003eThe Hydro Bros stock Ionic PK Boost because it is a straightforward, proven flowering additive that does exactly what growers want it to do. If your plants are entering peak bloom and you want extra flowering support without unnecessary complexity, this is a proper solid PK option.\u003c\/p\u003e","brand":"IONIC NUTRIENTS","offers":[{"title":"1L","offer_id":57211378991477,"sku":"12969","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":57211379024245,"sku":"12970","price":34.95,"currency_code":"GBP","in_stock":true},{"title":"20L","offer_id":57211379057013,"sku":"12971","price":75.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/files\/nutrients-pk-boost-1l-growth-technology-ionic-nutrients-1169121481.png?v=1747968795"}],"url":"https:\/\/www.thehydrobros.com\/en-de\/collections\/ionic-nutrients-20-off-july-2026.oembed","provider":"The Hydro Bros","version":"1.0","type":"link"}