{"product_id":"veg-bloom-stax-aka-stackswell","title":"Veg+Bloom Stax Cal-Mag Powder for Hydroponics","description":"\u003ch2\u003eCal-Mag, Wetting Agent and Drip Cleaner in a Single Powder\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eVeg+Bloom Stax\u003c\/strong\u003e (formerly known as \u003cstrong\u003eStackswell\u003c\/strong\u003e) is a powdered blend of \u003cstrong\u003ehumic acids, calcium, magnesium and sugars\u003c\/strong\u003e from Hydroponic Research, rolling several separate bottles into one scoop. Most growers run a cal-mag, a wetting agent and a line cleaner side by side: three products to store, three to measure and three chances to get the ratio wrong. Stax handles all three at once, formulated for commercial-scale growers but just as usable in a single tent.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium for cell wall formation\u003c\/strong\u003e, cell division and enzyme activity, heading off stunted growth and blossom end rot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnesium for photosynthesis\u003c\/strong\u003e, chlorophyll production and ATP synthesis, keeping leaves green not chlorotic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumic acid chelates nutrients\u003c\/strong\u003e into readily available forms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter water and nutrient holding\u003c\/strong\u003e, with improved drainage and less compaction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSugars feed plant and microbes\u003c\/strong\u003e, lifting photosynthesis and nutrient uptake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne powder instead of three bottles\u003c\/strong\u003e, cutting storage, mixing time and dosing errors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eYellowing Leaves and Blocked Drippers\u003c\/h3\u003e\u003cp\u003eCal-mag shortfalls rarely announce themselves early. You see interveinal yellowing on older leaves, scorched tips under strong light and slow growth that no feed increase fixes, because the nutrient is present but not taken up. Soft water and heavy LED intensity make it worse. Stax adds calcium and magnesium alongside humic acid so uptake improves, while the wetting agent keeps solution moving evenly instead of channelling past dry pockets and leaving weak roots behind.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoco and hydroponics:\u003c\/strong\u003e add Stax to the reservoir \u003cstrong\u003efirst\u003c\/strong\u003e, before your base powder, stirring until fully dissolved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil:\u003c\/strong\u003e mix into the tank in the same order and apply as a normal root feed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRates:\u003c\/strong\u003e follow the Veg+Bloom feed chart, as rates differ between the Tap\/Hard, RO\/Soft and Dirty bases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming:\u003c\/strong\u003e use through \u003cstrong\u003evegetative growth and flower\u003c\/strong\u003e at a consistent dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH after mixing:\u003c\/strong\u003e \u003cstrong\u003e5.8 to 6.2\u003c\/strong\u003e in coco and hydro, \u003cstrong\u003e6.2 to 6.5\u003c\/strong\u003e in soil. Check EC before feeding.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Combined cal-mag, wetting agent and drip cleaner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Water-soluble powder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey ingredients:\u003c\/strong\u003e Humic acids, calcium, magnesium, sugars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso known as:\u003c\/strong\u003e Stackswell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e Soil, coco and hydroponic systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e Veg+Bloom by Hydroponic Research\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Veg+Bloom","offers":[{"title":"25lb","offer_id":53445684789514,"sku":null,"price":822.95,"currency_code":"GBP","in_stock":true},{"title":"1lb","offer_id":53445684822282,"sku":null,"price":37.49,"currency_code":"GBP","in_stock":true},{"title":"2.2lb","offer_id":53445684855050,"sku":null,"price":79.49,"currency_code":"GBP","in_stock":true},{"title":"5lb","offer_id":53445684887818,"sku":null,"price":182.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/STAX-5_80e5cd59-28ae-4fb2-a011-0ffb42bd3402.jpg?v=1785319394","url":"https:\/\/hydrocropshop.co.uk\/products\/veg-bloom-stax-aka-stackswell","provider":"Hydro Crop Shop","version":"1.0","type":"link"}