{"product_id":"stonewool-slab-40x40x40mm-36cubes","title":"Stonewool Slab (40x40x40) 36 Cubes","description":"\u003cp\u003eGet your seedlings and cuttings off to a strong start with this slab of 36 Stonewool cubes. Balancing excellent moisture retention with plenty of oxygen around developing roots, Stonewool creates the ideal environment for healthy germination \u0026amp; vigorous root growth.\u003c\/p\u003e\u003cp\u003ePerfect for seeds, cuttings and hydroponic growing, these cubes can be used on their own or transferred into larger Stonewool blocks as your plants develop.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Growers Love It\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSuitable For:\u003c\/strong\u003e Seeds, cuttings and hydroponic growing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStrong Starts for Young Plants:\u003c\/strong\u003e Holds moisture and air to encourage healthy root systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVersatile:\u003c\/strong\u003e Use alone in hydroponic systems or with Aqua Clay (LECA), perlite, coco coir and other hydroponic substrates.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTransplant Friendly:\u003c\/strong\u003e Fits standard Stonewool blocks as plants develop.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e36 Cubes:\u003c\/strong\u003e Plenty for propagation projects big and small.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eAbout Stonewool\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eStonewool is made by melting basalt and limestone rock, then spinning into fine fibres \u0026amp; compressing into cubes, blocks or slabs. The result is a sterile growing medium that balances moisture \u0026amp; airflow for healthy root development.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eGetting Started\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePre-Condition:\u003c\/strong\u003e Soak the cubes in pH 5.5 water before use (to dissolve lime).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePre-Soak Time:\u003c\/strong\u003e 30 seconds to 30 minutes, depending on the Stonewool product size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDon't Squeeze:\u003c\/strong\u003e Especially when wet - this can damage the fibre structure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater During Light Hours:\u003c\/strong\u003e Water only when your plants are receiving light - never in the dark.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater Wisely:\u003c\/strong\u003e Keep Stonewool moist, not waterlogged. Overwatering reduces oxygen around roots \u0026amp; may result in algae growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHandle Safely:\u003c\/strong\u003e We recommend wearing gloves \u0026amp; a dust mask when handling dry Stonewool, as fibres may cause temporary skin or respiratory irritation.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eExplore the Range\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eNeed a different size? We have a \u003cstrong\u003e\u003ca href=\"https:\/\/www.growandbrew.co.nz\/products\/rockwool-cultilene-block-hole-75x75x65?_pos=3\u0026amp;_sid=81616d309\u0026amp;_ss=r\" title=\"Stonewool Block (75x75x65mm)\"\u003eStonewool Block (75×75×65mm)\u003c\/a\u003e \u003c\/strong\u003eand a \u003ca href=\"https:\/\/www.growandbrew.co.nz\/products\/grodan-25-x40-100-cubes-slab?_pos=1\u0026amp;_sid=81616d309\u0026amp;_ss=r\" title=\"Stonewool Slab (25x25x40mm) 100 Cubes\"\u003e\u003cstrong\u003eStonewool Slab (25×25×40mm) – 100 Cubes\u003c\/strong\u003e\u003c\/a\u003e so you can find the best fit for your propagation setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSmall cubes. Big growing potential.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Grow \u0026 Brew","offers":[{"title":"Default Title","offer_id":40633360154676,"sku":"stonewool36","price":16.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/7129\/5540\/files\/StonewoolSlab_40x40x40mm_36Cubes.png?v=1785361134","url":"https:\/\/www.growandbrew.co.nz\/products\/stonewool-slab-40x40x40mm-36cubes","provider":"Grow \u0026 Brew","version":"1.0","type":"link"}