{"product_id":"mi0512-1-5-rockwool-starter-plugs-for-hydroponics-rockwool-grow-cubes-1-sheets-of-28-plugs-small","title":"MI0512 1.5” Rockwool Starter Plugs for Hydroponics, Rockwool Grow Cubes, 1 Sheets of 28 Plugs (Small)","description":"\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePremium Rockwool Growing Medium: Sterile rockwool cubes designed for seed starting, rooting cuttings, plant propagation, and hydroponic growing.\u003c\/li\u003e\n\u003cli\u003eEasy Seed Starting: Predrilled planting holes make sowing seeds and propagating plants simple and convenient for home gardeners and commercial growers.\u003c\/li\u003e\n\u003cli\u003eExcellent Water \u0026amp; Air Balance: Provides approximately 20% air space when saturated while retaining moisture to help maintain a healthy root environment.\u003c\/li\u003e\n\u003cli\u003eDurable Structure: High-density rockwool helps maintain cube shape during watering and transplanting while providing consistent support for developing roots.\u003c\/li\u003e\n\u003cli\u003eConvenient Size: Each cube measures 1.5\" × 1.5\" × 1.5\", suitable for hydroponic systems, seed germination, propagation, and greenhouse growing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSPECIFICATIONS Size: 1.5”W x 1.5”D x 1.5”H Quantity: 28cubes Package: 1 Sheet ADVANTAGE Firm: hold their shape well and do not fall apart Breathable: retaining plenty of oxygen for rapid plant growth Aseptic production: Inorganic and sterile growing medium better than soil Water \u0026amp; nutrient retention: retains a lot of water and nutrient solution Suitable for hobby or commercial growers WARM TIPS 1.Wear gloves\/glasses while handling 2.Don't try to tear the product - cut it Please Note : To Soak , simply dig plug briefly (10 sec) in a starter solution adjusted to pH 5.5 using pH down either or a lemon ,Do not squeeze the plug  How to transplant rock wool block Once the you see about 0.5-1\" of root growth below the plug, it is time to transplant. They can go straight into the big rockwool hole, as they do not have any wrapping on them. Your best bet is to transplant the starter plug into a 3\" or 4\" . WHY? It is much easier to control the moisture level in a 3\"-4\" than a larger block. Just wait until the block feels really light before you water. Smaller blocks like these will keep an even moisture level in the entire block. Rule of thumb: water 15 minutes before the block goes dry. If \u003c\/p\u003e\u003cp\u003eFree shipping included. 30-day hassle-free returns.\u003c\/p\u003e","brand":"Belmont Warehouse","offers":[{"title":"Default Title","offer_id":43249490493649,"sku":"BW-B07VYKNGRW","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/3123\/5793\/files\/61FjunmyyxL._AC_SL1131.jpg?v=1786931690","url":"https:\/\/belmontwarehouse.com\/products\/mi0512-1-5-rockwool-starter-plugs-for-hydroponics-rockwool-grow-cubes-1-sheets-of-28-plugs-small","provider":"Belmont Warehouse","version":"1.0","type":"link"}