{"product_id":"global-garden-cultiwool-grow-blocks-1-5-x-1-5-x-1-5","title":"Global Garden Cultiwool Grow Blocks - 1.5\" x 1.5\" x 1.5\"","description":"\u003ch3\u003eCultiwool Grow Blocks\u003c\/h3\u003e\n\u003cp\u003ePrecision-engineered rockwool substrate for professional propagation and early vegetative cultivation. Cultiwool Grow Blocks feature integrated drain grooves on the base that improve water flow beneath the block, preventing the standing water at the substrate base that invites root pathogens and oxygen deprivation. The 6Ã-6Ã-4 and 6Ã-6Ã-6 variants include a donut-ring water chamber engineered for dripper irrigation distributing nutrient solution uniformly across the entire growing surface rather than channeling it through a single wet zone.\u003c\/p\u003e\n\u003cp\u003eManufactured to the dimensional precision and consistency that professional NFT, DWC, and hydroponic slab systems demand, Cultiwool provides the stable, inert substrate environment that makes hydroponic cultivation predictable and repeatable across every crop cycle.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Base Drain Grooves\u003c\/strong\u003e - Channels at the block base direct runoff water away from the root zone, maintaining air porosity beneath the block and preventing anaerobic conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDonut Ring Irrigation Chamber (6Ã-6Ã-4 \u0026amp; 6Ã-6Ã-6)\u003c\/strong\u003e - Circular water chamber distributes dripper irrigation uniformly across the block surface eliminates wet\/dry zones that cause uneven root development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInert, pH-Stable Substrate\u003c\/strong\u003e - Rockwool\/stonewool provides a chemically neutral growing environment no interference with nutrient program chemistry or pH management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensional Precision for Professional Systems\u003c\/strong\u003e - Manufactured to consistent specifications for reliable fit in NFT channels, propagation trays, and hydroponic slab systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSterile Manufacturing\u003c\/strong\u003e - Factory-produced under controlled conditions starts every crop cycle free of pathogens, competing biology, and contamination.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Global Garden","offers":[{"title":"4\" x 4\" x 2.5\"","offer_id":56300282577062,"sku":"GG-640015","price":179.95,"currency_code":"USD","in_stock":true},{"title":"4\" x 4\" x 4\"","offer_id":56300282609830,"sku":"GG-640020","price":189.95,"currency_code":"USD","in_stock":true},{"title":"6\" x 6\" x 4\" (with donut ring)","offer_id":56300282642598,"sku":"GG-640025","price":194.95,"currency_code":"USD","in_stock":true},{"title":"6\" x 6\" x 6\" (with donut ring)","offer_id":56300282675366,"sku":"GG-640030","price":189.95,"currency_code":"USD","in_stock":true},{"title":"8\" x 8\" x 8\"","offer_id":56300282708134,"sku":"GG-640032","price":134.95,"currency_code":"USD","in_stock":true},{"title":"Default Title","offer_id":56300282740902,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6344\/0294\/files\/cultiwool-block.jpg?v=1773712484","url":"https:\/\/gridfreesupply.com\/products\/global-garden-cultiwool-grow-blocks-1-5-x-1-5-x-1-5","provider":"Grid Free Supply","version":"1.0","type":"link"}