{"product_id":"xidajie-rockwool-cubes-1in-400-pack-25-25-40mm-starter-plugs-for-hydroponics-sterile-moisture-retentive-growing-medium","title":"XIDAJIE Rockwool Cubes 1in 400-Pack — 25×25×40mm Starter Plugs for Hydroponics, Sterile Moisture-Retentive Growing Medium","description":"\u003cb\u003eXIDAJIE 400-piece 1-inch rockwool cubes are compact starter plugs designed to deliver consistent moisture, air flow, and easy transplanting for hydroponic and soilless seed propagation.\u003c\/b\u003e\n\n\u003cp\u003eIf you grow from seed, clone cuttings, or run a hydroponic system, these 25×25×40mm rockwool blocks give a uniform, sterile medium that speeds rooting while simplifying handling. Made from inorganic mineral fiber without glass fiber, the blocks hold shape when wet, retain water efficiently, and allow good air exchange around developing roots. The pack contains eight sheets of 50 cubes (400 cubes total), sized to work in net pots, trays, or trays with standard cell spacing.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these rockwool cubes improve germination and early root development?\u003c\/h3\u003e\n\u003cp\u003eThe structure of rockwool balances water retention with air pockets so seeds and cuttings have access to both moisture and oxygen. That balance reduces damping-off risk from overwatering and supports steady root growth. Because the cubes are sterile and uniform, you get predictable results across large batches.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePorous fiber matrix for balanced moisture and aeration\u003c\/li\u003e\n  \u003cli\u003ePre-formed planting hole for stable seed placement or cutting\u003c\/li\u003e\n  \u003cli\u003eSterile, inert medium to minimize pathogens and contaminants\u003c\/li\u003e\n  \u003cli\u003eConsistent cube size for uniform germination across trays\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s the correct way to prepare and use these starter plugs?\u003c\/h3\u003e\n\u003cp\u003eCut to desired size if needed, then soak in a nutrient solution adjusted to recommended EC and pH levels; do not wring the cube. Maintain appropriate light and temperature for your crop and transplant when roots extend about 0.5–1 inch beyond the cube. Follow crop-specific pH and EC settings for best results.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSoak in 30–35°C nutrient solution; EC 1.5–2.0 ms, pH 5.0–5.5\u003c\/li\u003e\n  \u003cli\u003eDon’t squeeze — let cubes absorb solution naturally\u003c\/li\u003e\n  \u003cli\u003eTransplant when robust roots penetrate 0.5–1 inch from the cube\u003c\/li\u003e\n  \u003cli\u003eTrim or resize cubes with a knife before soaking if needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I transplant seedlings grown in these cubes into soil, pots, or hydro systems?\u003c\/h3\u003e\n\u003cp\u003eYes — the cubes hold together and allow roots to pass through easily, so moving plants to pots, soil beds, or net pots is straightforward. The inert rockwool won’t decompose quickly, so roots form a healthy interface with the new medium. For soil transfers, ensure the cube’s pH is compatible with the destination medium.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHolds shape to simplify removal and placement in pots or net pots\u003c\/li\u003e\n  \u003cli\u003eRoots penetrate the cube to enable smooth transplanting\u003c\/li\u003e\n  \u003cli\u003eWorks in hydroponic systems, soil pots, and media mixes\u003c\/li\u003e\n  \u003cli\u003eSuitable for cuttings, seedlings, and cloning applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat practical advantages do these cubes offer to growers?\u003c\/h3\u003e\n\u003cp\u003eThey reduce transplant shock, standardize propagation across many plants, and save time compared with irregular soil starts. Their lightweight, space-efficient format lets you start large numbers of plants on balconies, rooftops, or in commercial propagation areas without heavy media handling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e400 cubes per pack for high-volume propagation\u003c\/li\u003e\n  \u003cli\u003eLightweight and easy to store or transport\u003c\/li\u003e\n  \u003cli\u003eReduces water and fertilizer loss versus traditional soil setups\u003c\/li\u003e\n  \u003cli\u003ePre-cut planting holes speed setup and planting workflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? XIDAJIE 1-inch rockwool cubes are aimed at home gardeners who want reliable, compact seed starting; hobbyists scaling up propagation; and commercial growers needing uniform, sterile starter plugs for hydroponics, cuttings, or cloning. If you value predictable germination, simplified transplanting, and a soilless medium that integrates easily with trays, net pots, or automated systems, this kit is built to help you scale propagation with consistency.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to treat the rockwool before use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Soak in nutrient solution at pH 5.0–5.5 and EC 1.5–2.0, temperature 30–35°C. Do not squeeze the cubes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: When should I transplant seedlings from these cubes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Transplant when roots extend about 0.5–1 inch beyond the cube for strong establishment.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"XIDAJIE","offers":[{"title":"Default Title","offer_id":56832325222740,"sku":"B0BXP6PWXM","price":75.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/xidajie-front-packaging-rockwool-cubes.jpg?v=1787027115","url":"https:\/\/gardenluxe.co.uk\/products\/xidajie-rockwool-cubes-1in-400-pack-25-25-40mm-starter-plugs-for-hydroponics-sterile-moisture-retentive-growing-medium","provider":"Gardenluxe Uk","version":"1.0","type":"link"}