{"product_id":"professors-nutrients-hydro-clay-10l-carton-of-5-bulk-50l-premium-expanded-clay-aggregate-leca","title":"Professor's Nutrients - Hydro Clay (10L) Carton of 5 - Bulk 50L Premium Expanded Clay Aggregate (LECA)","description":"\u003ch3\u003e5 X Professor’s Nutrients - Hydro Clay (10L) – Bulk Carton of 5 (50L Total)\u003c\/h3\u003e\n\n\u003cp\u003eEngineered for hydroponic commercial growers, indoor plant enthusiasts, and boutique market nurseries, this bulk carton contains five individual 10-Litre bags (50 Litres total) of Professor’s Nutrients Hydro Clay. This premium Lightweight Expanded Clay Aggregate (LECA) is a high-performance substrate manufactured by firing premium natural clay in a rotary kiln at extreme temperatures. This process causes the clay to expand into highly porous, lightweight spheres with a varying diameter of 8–16mm. Featuring a rigid, sterile outer shell and a micro-porous internal core, Hydro Clay provides the ultimate structural foundation for rapid root zone aeration and instant drainage.\u003c\/p\u003e\n\n\u003cp\u003ePurchasing this product in a commercial carton of 5 provides an incredibly cost-effective, easy-to-handle bulk media solution. It is ideal for scaling up multi-site hydroponic systems or repotting large indoor plant collections. Completely inert, chemically neutral, and structurally stable, Hydro Clay ensures it will not break down, compact, or alter your water reservoir’s nutrient balance over long, intensive crop cycles.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003cb\u003eBest For:\u003c\/b\u003e Large-scale semi-hydroponic indoor plant cultivation (passive hydroponics), commercial Deep Water Culture (DWC) arrays, top-feed drip irrigation tables, base drainage layers in commercial crop rows, and bulk premium aroid potting mix blending.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eConvenient Bulk Carton Packing:\u003c\/b\u003e Supplied as a matching set of 5 individual 10L hobby bags, giving you a massive 50L total volume that is easy to carry, store, and distribute across the greenhouse without hauling unmanageable bulk sacks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eOptimised 8–16mm Mixed Sizing:\u003c\/b\u003e The varying diameter of the clay balls ensures they interlock cleanly within net baskets, pots, and drainage channels, providing superior structural support for heavy plants while leaving massive macro-porous air gaps.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eMaximum Root Zone Aeration:\u003c\/b\u003e By maintaining an open, uncompactable physical matrix, Hydro Clay ensures that fresh oxygen is constantly available to the rhizosphere, driving explosive lateral root development and protecting against waterlogged root rot (Pythium).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003e100% Inert \u0026amp; pH Neutral:\u003c\/b\u003e Unlike inferior clay resources that can cause aggressive pH spikes, Professor's Hydro Clay is pre-stabilised and completely neutral, giving you absolute control over your precision liquid nutrient regime.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eInfinite Reusability \u0026amp; Value:\u003c\/b\u003e Highly durable and physically robust, these clay pebbles do not degrade, dissolve, or weather away. They can be thoroughly washed, sanitised, and reused season after season, making this bulk pack an exceptionally smart long-term investment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eSterile \u0026amp; Pathogen-Free Base:\u003c\/b\u003e The high-heat kiln manufacturing process ensures the medium is completely sterile upon packaging, entirely free from weeds, pests, harmful bacteria, and soil-borne diseases.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eExcellent Capillary Action:\u003c\/b\u003e The porous internal core absorbs moisture and dissolved nutrients, drawing them upward to feed young roots via capillary wicking action while allowing excess surface water to drain away instantly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eProduct Technical Specifications Matrix:\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left;\"\u003e\n  \u003ctr style=\"border-bottom: 1px solid #ccc;\"\u003e\n    \u003cth style=\"padding: 8px;\"\u003eSpecification Parameter\u003c\/th\u003e\n    \u003cth style=\"padding: 8px;\"\u003eDetails \u0026amp; Material Metrics\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003eBrand\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003eProfessor’s Nutrients\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003ePackage Configuration\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003eBulk Commercial Carton (Contains 5 x Individual Bags)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003eTotal Volume Capacity\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e50 Litres Total (10 Litres per bag)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003eMaterial\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e100% Natural Lightweight Expanded Clay Aggregate (LECA)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003ePebble Grading Size\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e8mm – 16mm (Varying Interlocking Diameter)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003eChemical Profile\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003eInert, pH Stable, Non-Degrading, Pre-Wash Recommended\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n    \u003ctd style=\"padding: 8px;\"\u003e\u003cb\u003ePrimary Applications\u003c\/b\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px;\"\u003eRecirculating Hydroponics, Aquaponics, Passive Sub-Irrigation, Container Pot Drainage Layers\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cb\u003ePreparation \u0026amp; Management Tips:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eThe Initial Rinse:\u003c\/b\u003e Like all premium LECA products, Hydro Clay can develop a fine clay dust during transit. Before introducing it to your active system or indoor pots, pour the pebbles into a mesh colander or a perforated bucket and rinse them thoroughly with fresh water until it runs completely clear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003ePre-Soaking for Stability:\u003c\/b\u003e For best results in recirculating hydroponic setups or passive indoor plant wicking, soak your rinsed clay pebbles in a pH-adjusted water bath (5.5–5.8) for 24 hours prior to planting. This fully saturates the internal pores and locks in your target baseline.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003ePassive Hydroponics (LECA Method):\u003c\/b\u003e For indoor houseplants like Monsteras or Anthuriums, fill a non-perforated decorative pot with a 2–3cm layer of Hydro Clay, sit the plant's clean root system on top, and fill the rest of the container. Maintain a water level only within that bottom 2–3cm layer; the clay's capillary action will wick moisture upward without drowning the roots.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eSterilising Between Cycles:\u003c\/b\u003e To reuse your Hydro Clay, strip out the old root mass, rinse the pebbles to remove organic debris, and soak them in a diluted hydrogen peroxide or sanitising solution. Rinse once more with fresh water, and the media is ready for the next run.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eIdeal For:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eCommercial Hydroponics:\u003c\/b\u003e The absolute gold standard medium for commercial-scale flood-and-drain tables, top-feed drip rings, or large DWC buckets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eBase Drainage Layer:\u003c\/b\u003e Placing a uniform 2–3cm layer at the bottom of standard soil or coco coir pots to prevent pooling water and ensure flawless drainage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eAroid \u0026amp; Indoor Potting Mixes:\u003c\/b\u003e Blending into dense potting soils to lighten the overall weight of the container and instantly introduce permanent aeration pockets for indoor plants.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48423966146660,"sku":"4913","price":104.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay16_2026_09_11_43PM.png?v=1778937375","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/professors-nutrients-hydro-clay-10l-carton-of-5-bulk-50l-premium-expanded-clay-aggregate-leca","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}