{"product_id":"grodan-vital-slab","title":"Grodan Vital Rockwool Slab for Precision Hydroponic Growing","description":"\u003ch2\u003eAn even root zone from one slab to the next\u003c\/h2\u003e\n\u003cp\u003eGrodan Vital is a \u003cstrong\u003estone wool slab\u003c\/strong\u003e built on \u003cstrong\u003eNG2.0 technology\u003c\/strong\u003e, aimed at growers running tomatoes, peppers, cucumbers and aubergines on a precision schedule. The vertical fibre structure distributes water and feed evenly through the slab, so moisture and EC readings stay consistent from one end to the other and from slab to slab. It re-saturates quickly across a wide steering range, which gives you room to run drier or wetter without the substrate fighting you. \u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniform water distribution\u003c\/strong\u003e - vertical fibre structure spreads feed evenly, minimising variation between slabs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast re-saturation\u003c\/strong\u003e - takes water back up quickly, so you can steer across a broad range with confidence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable EC correction\u003c\/strong\u003e - fast and predictable EC adjustment when you need to reset the root zone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerative crop response\u003c\/strong\u003e - designed to encourage generative development in fruiting crops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInert and hydrophilic\u003c\/strong\u003e - the medium adds nothing of its own, so your feed schedule is what the plant gets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuy by the slab or the bag\u003c\/strong\u003e - one slab for a trial run, twelve for a full bench.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen the Substrate Is the Variable You Cannot See\u003c\/h3\u003e\n\u003cp\u003eYou can dial in your feed to the decimal point and still get uneven plants if the slabs themselves hold water differently. Dry corners, saturated ends and slab-to-slab drift all show up as crop variation long before you trace them back to the medium. A slab engineered for uniform distribution takes that variable off the table, so the readings you take on one plant tell you something useful about the rest of the row.\u003c\/p\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSaturate the slab fully with pH-corrected nutrient solution before planting.\u003c\/li\u003e\n\u003cli\u003eAllow it to drain and stabilise, then cut drainage slits to suit your irrigation strategy.\u003c\/li\u003e\n\u003cli\u003eSeat blocks or plants firmly on the slab so roots make good contact.\u003c\/li\u003e\n\u003cli\u003eMonitor slab EC and water content daily and steer with irrigation frequency.\u003c\/li\u003e\n\u003cli\u003eUse for a single crop cycle, then replace.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"hcs-specs\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eGrodan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eVital stone wool slab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnology\u003c\/th\u003e\n\u003ctd\u003eNG2.0, vertical fibre structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e1 - 1.3 metre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupplied As\u003c\/th\u003e\n\u003ctd\u003eSingle slab \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eInert, hydrophilic stone wool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCrop Life\u003c\/th\u003e\n\u003ctd\u003eSingle year \/ single crop slab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuited To\u003c\/th\u003e\n\u003ctd\u003eTomatoes, sweet peppers, cucumbers, aubergines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Grodan","offers":[{"title":"1m \/ Single Slab","offer_id":53446973554954,"sku":null,"price":5.95,"currency_code":"GBP","in_stock":true},{"title":"1.3m\/ Single Slab","offer_id":53485176324362,"sku":null,"price":6.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/grodanvital.png?v=1785315701","url":"https:\/\/hydrocropshop.co.uk\/products\/grodan-vital-slab","provider":"Hydro Crop Shop","version":"1.0","type":"link"}