{"product_id":"grodan-mm-40-40-box-ao-sbs-cubes","title":"Grodan MM 40\/40 box \/ AO SBS cubes","description":"\u003ch2\u003eReliable germination and rooting from a trusted stone wool\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eGrodan MM 40\/40, AO and SBS Cubes\u003c\/strong\u003e are premium \u003cstrong\u003estone wool propagation media\u003c\/strong\u003e that give seeds and cuttings the ideal balance of air and water while they establish. Made from hydrophilic stone wool with a uniform density, they hold consistent moisture and oxygen for rapid, even rooting - and they're clean, sterile and easy to handle. Used across hydroponics, indoor growing and vertical farming for vegetables, herbs and ornamentals, \u003cstrong\u003eMM blocks\u003c\/strong\u003e suit transplanting while \u003cstrong\u003eAO and SBS plugs\u003c\/strong\u003e are built specifically for reliable seed germination and propagation.\u003c\/p\u003e\u003ch3\u003eFixing uneven germination and weak early roots\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eUneven germination\u003c\/strong\u003e and weak root systems delay establishment and cut into final yields. These cubes provide a stable, sterile medium with strong moisture retention and oxygen availability, so roots develop quickly and evenly with consistent water and nutrient distribution - reducing the risk of \u003cstrong\u003eoverwatering or dry spots\u003c\/strong\u003e and encouraging vigorous growth once transplanted.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium stone wool\u003c\/strong\u003e media purpose-built for propagation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast, even root development\u003c\/strong\u003e from an excellent air-to-water ratio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniform density\u003c\/strong\u003e for consistent moisture across the tray\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible\u003c\/strong\u003e with NFT, DWC, drip, flood-and-drain and vertical farming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean and sterile\u003c\/strong\u003e, easy to handle for reliable, repeatable propagation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eSoak the cubes in clean water adjusted to \u003cstrong\u003epH 5.5-5.8\u003c\/strong\u003e for around \u003cstrong\u003e15-30 minutes\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eLet excess water drain naturally - \u003cstrong\u003edo not squeeze the cubes\u003c\/strong\u003e, as this damages the fibre structure.\u003c\/li\u003e\n\u003cli\u003ePlace seeds or cuttings into the pre-formed planting hole.\u003c\/li\u003e\n\u003cli\u003eKeep evenly moist, avoiding waterlogging.\u003c\/li\u003e\n\u003cli\u003eOnce roots emerge from the sides and base, transplant into a larger Grodan block, slab or your chosen system.\u003c\/li\u003e\n\u003cli\u003eBegin feeding a light nutrient solution once germination or rooting starts, increasing strength as plants develop.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e hydrophilic stone wool\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMM block size:\u003c\/strong\u003e 40 x 40 x 40mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAO plug sizes:\u003c\/strong\u003e 25 x 25 x 40mm, 36 x 36 x 40mm, 50 x 50 x 40mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSBS plug sizes:\u003c\/strong\u003e 25 x 25 x 40mm and 36 x 36 x 40mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e seed germination, rooting cuttings and propagation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible systems:\u003c\/strong\u003e hydroponics, NFT, DWC, drip, flood-and-drain, vertical farming\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Grodan","offers":[{"title":"MM 40\/40 box (2250)","offer_id":53359546827018,"sku":"MED-GROD-001-01","price":360.0,"currency_code":"GBP","in_stock":true},{"title":"AO SBS cubes","offer_id":53409488175370,"sku":"MED-GROD-001-02","price":367.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/GMM44.jpg?v=1783964475","url":"https:\/\/hydrocropshop.co.uk\/products\/grodan-mm-40-40-box-ao-sbs-cubes","provider":"Hydro Crop Shop","version":"1.0","type":"link"}