{"product_id":"perlite-100l-hydroponic-growing-medium-australia","title":"Perlite 100L | Hydroponic Growing Medium for Drainage \u0026 Root Oxygenation Australia","description":"\u003ch2\u003ePerlite 100L. High-Aeration Hydroponic Growing Medium for Maximum Drainage and Root Oxygenation\u003c\/h2\u003e\u003cp\u003ePerlite is a thermally expanded volcanic siliceous mineral processed into a lightweight, sterile, highly porous growing medium used across hydroponics, soil conditioning, and propagation systems. The 100L bulk format delivers commercial-scale value, making it the preferred choice for growers needing consistent aeration, improved drainage, and precise root zone control.\u003c\/p\u003e\u003cp\u003eSourced from naturally occurring siliceous rock and processed through high-temperature expansion, perlite forms a micro-cellular structure that dramatically improves oxygen availability and water movement within the root zone. Inert, pH neutral, and non-compacting across the full growth cycle.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100L Bulk Format.\u003c\/strong\u003e High-value option for large grow systems, commercial operations, and custom substrate blending.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Lightweight Expanded Mineral.\u003c\/strong\u003e Reduces system weight and improves handling without sacrificing performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Porosity Structure.\u003c\/strong\u003e Maximises root oxygenation through a micro-cellular air pocket network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Drainage Medium.\u003c\/strong\u003e Prevents waterlogging, anaerobic conditions, and root disease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSterile and Inert.\u003c\/strong\u003e Free from pathogens, pests, and contaminants. No pre-treatment required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Neutral.\u003c\/strong\u003e Compatible with all nutrient programs without interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Compacting.\u003c\/strong\u003e Maintains structural integrity and airflow across long grow cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable and Sustainable.\u003c\/strong\u003e Naturally mined mineral with low environmental impact.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cp\u003ePerlite optimises three critical root zone parameters. Air-filled porosity: the expanded structure creates microscopic air pockets, increasing oxygen availability essential for root respiration and aerobic microbial activity. Drainage efficiency: water moves freely through the medium, preventing stagnation and anaerobic root conditions between irrigation cycles. Structural stability: perlite does not break down or compact, ensuring consistent performance and airflow across the full duration of the grow cycle.\u003c\/p\u003e\u003cp\u003eThe result is healthier roots, faster growth rates, and significantly reduced grower error from overwatering or poor drainage.\u003c\/p\u003e\u003ch3\u003eWhy Perlite Solves Common Growing Problems\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverwatering and Root Rot.\u003c\/strong\u003e Dense or water-retentive media limits oxygen. Perlite's open structure allows excess water to drain rapidly, preventing anaerobic conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Root Development.\u003c\/strong\u003e Compacted or low-oxygen substrates restrict root expansion. Perlite increases air-filled porosity, enabling faster and more extensive root development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy, Waterlogged Pots.\u003c\/strong\u003e Soil-based media retains excess moisture. Perlite reduces overall weight and improves drainage efficiency across all container sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInconsistent Nutrient Uptake.\u003c\/strong\u003e Fluctuating moisture levels cause root stress. Perlite stabilises the root zone by maintaining balanced air-to-water ratios between feeds.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerlite vs Other Growing Media\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Soil.\u003c\/strong\u003e Soil compacts and holds excess water. Perlite maintains permanent aeration and ensures rapid drainage, reducing root disease risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Coco Coir.\u003c\/strong\u003e Coco retains high moisture and can compact over time. Perlite prevents oversaturation and maintains structural integrity in high-frequency irrigation systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Rockwool.\u003c\/strong\u003e Rockwool presents disposal challenges. Perlite offers more natural drainage behaviour and is more environmentally favourable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Clay Balls (LECA).\u003c\/strong\u003e LECA retains less moisture. Perlite provides a more balanced moisture and drainage profile, making it better suited for blending and moisture control.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSystem Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMicro-cellular expanded structure for maximum air-filled porosity\u003c\/li\u003e\n\u003cli\u003eInert and pH neutral. No buffering or pre-treatment required.\u003c\/li\u003e\n\u003cli\u003eNon-compacting across full grow cycles\u003c\/li\u003e\n\u003cli\u003eReusable after sterilisation\u003c\/li\u003e\n\u003cli\u003eIdeal for blending with coco, soil, or clay for custom substrate ratios\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrip Irrigation Systems (Run-to-Waste and Recirculating)\u003c\/li\u003e\n\u003cli\u003eDeep Water Culture (DWC)\u003c\/li\u003e\n\u003cli\u003eEbb and Flow (Flood and Drain)\u003c\/li\u003e\n\u003cli\u003eSoil Conditioning and Potting Mix Amendment\u003c\/li\u003e\n\u003cli\u003eSeed Starting and Propagation\u003c\/li\u003e\n\u003cli\u003eGreenhouse and Container Growing\u003c\/li\u003e\n\u003cli\u003eCustom Substrate Blending (Coco + Perlite, Soil + Perlite)\u003c\/li\u003e\n\u003cli\u003eIndoor Plant Drainage Improvement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat Sets It Apart\u003c\/h3\u003e\u003cp\u003eThe 100L format is the most cost-efficient option for serious growers. At scale, perlite is most commonly used as a blending component, mixed with coco coir at ratios of 70\/30 or 80\/20 to improve drainage and aeration in run-to-waste drip systems. It is also used as a standalone medium in propagation trays and as a soil amendment to correct compaction and drainage issues in container growing. The 100L bag reduces cost per litre, minimises reorder frequency, and provides enough volume for large system builds or multiple grow cycles.\u003c\/p\u003e\u003ch3\u003eFrequently Bought Together\u003c\/h3\u003e\u003cp\u003ePerlite pairs directly with these systems and additives for a complete high-performance grow setup:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/flo-gro-dripper-system-recirculating-hydroponic-australia\"\u003eFlo-Gro Dripper System. Recirculating Drip Hydroponic System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/run-off-trays-hydroponic-drain-trays-australia\"\u003eRun Off Trays 15\" and 22\". Hydroponic Drain Trays for Run-to-Waste Systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/gt-silica-potassium-silicate-australia\"\u003eGrowth Technology GT Silica. Potassium Silicate Plant Strengthener\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial.\u003c\/strong\u003e Thermally Expanded Siliceous Volcanic Rock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume.\u003c\/strong\u003e 100 Litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructure.\u003c\/strong\u003e Lightweight Porous Aggregate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction.\u003c\/strong\u003e Drainage and Root Aeration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Retention.\u003c\/strong\u003e Low\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, Soil Conditioning, Propagation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case.\u003c\/strong\u003e Drainage Improvement, Root Health, Substrate Blending\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight.\u003c\/strong\u003e Approx. 10kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDo I need to prepare Perlite 100L before using it?\u003c\/h3\u003e\n\u003cp\u003eCoco coir products including Perlite 100L 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 Perlite 100L?\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 Perlite 100L?\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 Perlite 100L ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes — Perlite 100L 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":"Generic","offers":[{"title":"Default Title","offer_id":43210866819135,"sku":null,"price":69.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/perlite_1000x1000_Grey-copy-3-600x600.png?v=1777805843","url":"https:\/\/apexgrow.com.au\/products\/perlite-100l-hydroponic-growing-medium-australia","provider":"Apex Grow","version":"1.0","type":"link"}