{"product_id":"hydro-clay-balls-50l-leca-hydroponic-growing-medium-australia","title":"Professor's Nutrients Hydro Clay 50L | LECA Clay Balls Hydroponic Growing Medium Australia","description":"\u003ch2\u003eProfessor's Nutrients Hydro Clay 50L. Premium LECA Clay Balls (8 to 16mm) for Hydroponic Root Oxygenation\u003c\/h2\u003e\u003cp\u003eProfessor's Nutrients Hydro Clay is a high-performance Lightweight Expanded Clay Aggregate (LECA) engineered for maximum root oxygenation, fast drainage, and stable plant support across hydroponic and soil-free growing systems. Produced from 100% natural expanded clay, these uniform 8 to 16mm pellets create a highly porous, oxygen-rich root zone that drives consistent, high-quality plant growth.\u003c\/p\u003e\u003cp\u003eDesigned for both standalone hydroponic use and substrate blending, Hydro Clay delivers a balanced air-to-water ratio, making it one of the most versatile and scalable growing media for indoor cultivation, commercial systems, and semi-hydro plant setups.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50L Bulk Format.\u003c\/strong\u003e Ideal for large hydroponic systems, commercial operations, and high plant counts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 to 16mm Uniform Pellet Size.\u003c\/strong\u003e Consistent airflow and water distribution across all system types and net pot sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Porosity Structure.\u003c\/strong\u003e Maximises root oxygenation and enables faster nutrient uptake and root development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Drainage Performance.\u003c\/strong\u003e Prevents waterlogging and anaerobic root conditions in recirculating and drain-to-waste systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Moisture Retention.\u003c\/strong\u003e Retains a thin moisture film between irrigation cycles to support root hydration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Neutral and Inert.\u003c\/strong\u003e Compatible with all nutrient programs without interference or buffering requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable and Long Lifecycle.\u003c\/strong\u003e Wash and sterilise between cycles for cost-effective, multi-grow performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePest-Resistant Surface.\u003c\/strong\u003e Low-organic environment reduces fungus gnat breeding conditions compared to soil-based media.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cp\u003eProfessor's Nutrients Hydro Clay optimises three critical root zone variables. Oxygen availability: the porous 8 to 16mm pellet structure ensures continuous airflow around roots, essential for root respiration and aerobic microbial activity. Drainage efficiency: excess water drains rapidly through the uniform pellet bed, maintaining the ideal moisture balance between irrigation cycles. Structural stability: pellets retain their shape and spacing across full grow cycles, ensuring consistent root support and system reliability without compaction or breakdown.\u003c\/p\u003e\u003cp\u003eThe result is improved root health, faster growth rates, and repeatable crop performance across all system types.\u003c\/p\u003e\u003ch3\u003eWhy Hydro Clay Drives Better Growing Outcomes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoot Zone Oxygenation.\u003c\/strong\u003e The porous LECA structure creates continuous airflow around roots, improving respiration and enabling faster nutrient uptake and stronger root development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Drainage and Moisture Control.\u003c\/strong\u003e Clay balls allow water to move freely through the medium while retaining a thin moisture film on the surface, maintaining hydration without oversaturation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, Stable Growing Environment.\u003c\/strong\u003e The inert structure prevents organic breakdown, supporting consistent performance across long grow cycles with minimal maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePest-Resistant Surface.\u003c\/strong\u003e Hydro clay provides a low-organic environment, helping reduce common issues such as fungus gnat breeding conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSystem Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e8 to 16mm uniform pellet size for consistent airflow and water distribution\u003c\/li\u003e\n\u003cli\u003eInert and pH neutral. No buffering or pre-treatment required beyond a rinse.\u003c\/li\u003e\n\u003cli\u003eReusable after sterilisation. Long lifecycle across multiple grow cycles.\u003c\/li\u003e\n\u003cli\u003eLightweight aggregate for easy handling and reduced system load\u003c\/li\u003e\n\u003cli\u003eCompatible with all recirculating and drain-to-waste hydroponic systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDeep Water Culture (DWC)\u003c\/li\u003e\n\u003cli\u003eRecirculating Deep Water Culture (RDWC)\u003c\/li\u003e\n\u003cli\u003eEbb and Flow (Flood and Drain)\u003c\/li\u003e\n\u003cli\u003eDrip Irrigation Systems (Recirculating and Run-to-Waste)\u003c\/li\u003e\n\u003cli\u003eNet Pots and Basket Systems\u003c\/li\u003e\n\u003cli\u003eSemi-Hydro Indoor Plant Systems\u003c\/li\u003e\n\u003cli\u003eAquaponics Systems\u003c\/li\u003e\n\u003cli\u003eSubstrate Blending (Coco + Clay, Perlite + Clay)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat Sets It Apart\u003c\/h3\u003e\u003cp\u003eAt 8 to 16mm, Professor's Nutrients Hydro Clay sits in the optimal size range for most hydroponic net pots and grow sites. This pellet size delivers the right balance for fast root colonisation, stable plant anchoring, and consistent drainage performance. The uniform round pellet shape prevents bridging and uneven water distribution, which is a common issue with irregular or mixed-size aggregates. The inert expanded clay composition ensures zero nutrient interference, making it compatible with any nutrient program from seedling through to harvest. Reusable across multiple cycles with proper sterilisation, it is one of the most cost-effective bulk growing media available for serious hydroponic growers.\u003c\/p\u003e\u003ch3\u003eFrequently Bought Together\u003c\/h3\u003e\u003cp\u003eProfessor's Nutrients Hydro Clay is ready to use across all major hydroponic systems. Pair it with these compatible systems and nutrients from the Apex Grow range:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bubblebox-top-feed-dwc-hydroponic-system-australia\"\u003eBubblebox Top Feed DWC System. Deep Water Culture Hydroponic System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/oxypot-dwc-hydroponic-system-deep-water-culture-australia\"\u003eOxypot DWC Hydroponic System. Deep Water Culture Grow Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/recirculating-drip-hydroponic-system-top-feed-bucket-australia\"\u003eRecirculating Drip Hydroponic System. Top Feed Bucket Grow System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dutchfest-grow-bloom-professional-2-part-a-b-hydroponic-nutrients-australia\"\u003eDutchfest Grow and Bloom Professional. 2-Part A+B Hydroponic Nutrients\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand.\u003c\/strong\u003e Professor's Nutrients\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume.\u003c\/strong\u003e 50 Litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePellet Size.\u003c\/strong\u003e 8 to 16mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial.\u003c\/strong\u003e Expanded Clay Aggregate (LECA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructure.\u003c\/strong\u003e Uniform Round Pellets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction.\u003c\/strong\u003e Root Aeration and Drainage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Retention.\u003c\/strong\u003e Low to Moderate Surface Retention\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAeration.\u003c\/strong\u003e High Oxygen Availability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Stability.\u003c\/strong\u003e Neutral \/ Inert\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusability.\u003c\/strong\u003e Reusable After Sterilisation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication.\u003c\/strong\u003e Hydroponics, Indoor Plants, Semi-Hydro\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case.\u003c\/strong\u003e DWC, Drip Systems, Ebb and Flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePest Resistance.\u003c\/strong\u003e Reduces Fungus Gnat Habitat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight.\u003c\/strong\u003e Approx. 20kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDo I need to prepare Professor's Nutrients Hydro Clay 50L before using it?\u003c\/h3\u003e\n\u003cp\u003eCoco coir products including Professor's Nutrients Hydro Clay 50L should be pre-buffered with a calcium-magnesium solution before use to prevent cation exchange issues that cause nutrient lockout. Expanded clay pebbles (LECA) should be thoroughly rinsed and soaked in pH-adjusted water before planting to remove dust and stabilise pH. Rockwool should be pre-soaked in pH 5.5 water for 24 hours before use to lower its naturally alkaline pH.\u003c\/p\u003e\n\u003ch3\u003eCan I reuse Professor's Nutrients Hydro Clay 50L?\u003c\/h3\u003e\n\u003cp\u003eInert media such as expanded clay pebbles can be sterilised and reused multiple times. Rinse thoroughly, soak in a 10% bleach or hydrogen peroxide solution, rinse again with clean water, and re-buffer before reuse. Coco coir can be reused for 2–3 grows if properly maintained and sterilised between cycles. Rockwool is typically single-use in commercial applications but can be reused in home setups with thorough cleaning.\u003c\/p\u003e\n\u003ch3\u003eWhat nutrient solution pH should I use with Professor's Nutrients Hydro Clay 50L?\u003c\/h3\u003e\n\u003cp\u003eTarget pH 5.8–6.2 for coco and hydro inert media. Soil users should target 6.0–6.5. Maintaining pH within the optimal range ensures all macro and micronutrients remain soluble and available to plant roots. Use a calibrated pH pen and adjust with pH Up or pH Down solution as needed after mixing your nutrient solution.\u003c\/p\u003e\n\u003ch3\u003eDoes Professor's Nutrients Hydro Clay 50L ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes — Professor's Nutrients Hydro Clay 50L ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.\u003c\/p\u003e","brand":"Professor's Nutrients","offers":[{"title":"Professors Clay – 10L Bag","offer_id":43213506412607,"sku":null,"price":19.95,"currency_code":"AUD","in_stock":true},{"title":"Professors Clay – 50L Bag","offer_id":43213506445375,"sku":null,"price":54.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/Clay-PN.webp?v=1777863320","url":"https:\/\/apexgrow.com.au\/products\/hydro-clay-balls-50l-leca-hydroponic-growing-medium-australia","provider":"Apex Grow","version":"1.0","type":"link"}