{"product_id":"professor-s-nutrients-coco-perlite-blend-70-30-premium-high-aeration-substrate-50l","title":"Professor’s Nutrients - Coco-Perlite Blend (70\/30) – Premium High-Aeration Substrate (50L)","description":"\u003csection\u003e\n\u003ch3\u003eProfessor’s Nutrients - Coco-Perlite Blend (70\/30) – Premium High-Aeration Substrate (50L)\u003c\/h3\u003e\n\u003cp\u003eMaximising root zone oxygenation is the fastest way to accelerate plant growth, and Professor’s Nutrients Coco-Perlite Blend is engineered to deliver exactly that. This professional-grade substrate features a scientifically optimised mix of 70% premium RHP-certified Coco Coir and 30% horticultural-grade Perlite. By blending these two powerhouse media, this substrate combines the exceptional water retention and nutrient buffering of pure coco with the unmatched drainage capabilities of perlite. This lightweight, airy mix effectively eliminates the risk of over-watering and compaction, creating an ideal, oxygen-rich rhizosphere where roots can expand rapidly and absorb nutrients at peak efficiency.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e High-frequency automated drip irrigation systems, run-to-waste hydroponics, hand-watered container gardens, and heavy-feeding crops that demand maximum root aeration.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimised 70\/30 Commercial Ratio:\u003c\/strong\u003e The industry-standard blend provides the perfect balance between moisture retention and rapid drainage, ensuring plants stay hydrated without ever becoming waterlogged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Air-Tunnel Aeration:\u003c\/strong\u003e The inclusion of 30% perlite creates microscopic air pockets throughout the substrate. This prevents the medium from compacting over time, allowing fresh oxygen and nutrient solutions to flow freely to the root tips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Overwatering Protection:\u003c\/strong\u003e Excellent drainage capabilities mean excess water moves through the pot effortlessly, significantly reducing the risk of root rot (Pythium), fungus gnat infestations, and anaerobic root zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRHP-Certified Coco Base:\u003c\/strong\u003e Utilises the same world-class, premium coco found across the Professor's range—thoroughly washed and pre-buffered to ensure an ultra-low background EC and complete freedom from pathogens, weeds, or pests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Chemical Baseline:\u003c\/strong\u003e Naturally buffered to maintain a stable pH range, ensuring that your hydroponic nutrient solution remains fully bio-available from the moment it hits the medium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady-to-Use Convenience:\u003c\/strong\u003e Pre-blended and loose-filled into 50L bags, eliminating the labor-intensive task of sourcing, measuring, and mixing raw ingredients yourself.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\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 (Loose Fill Bag)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e 70% Buffered Coco Coir \/ 30% Horticultural Perlite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e Hydroponically Stabilised Baseline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Level:\u003c\/strong\u003e Ultra-Low Background Salt Content\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Hydroponics, Coco-Based Cultivation, and Potting Mix Amendment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeeding \u0026amp; Irrigation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Feeding:\u003c\/strong\u003e Due to the increased drainage provided by the 30% perlite content, this mix dries back faster than pure coco. It is perfectly suited for multi-feeding schedules (multiple smaller irrigations per day), which drives explosive vegetative growth and heavier yields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargeted Runoff:\u003c\/strong\u003e When liquid-feeding, always aim for a consistent 10–20% runoff. This ensures that old mineral salts are completely flushed from the perlite air pockets, replacing them with a fresh, highly-oxygenated nutrient charge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePot Optimization:\u003c\/strong\u003e For the ultimate high-aeration setup, use this blend in fabric aeration pots. The combination of fabric air-pruning and the 70\/30 mix will result in a massive, dense root ball free of root-circling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNutrient Selection:\u003c\/strong\u003e Because the base is 70% coco, always use a high-quality, 2-part **Coco Specific Nutrient** to ensure your plants receive adequate Calcium and Magnesium levels throughout their life cycle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated Drip Hydroponics:\u003c\/strong\u003e The absolute benchmark medium for automated run-to-waste systems where precise, frequent watering cycles are managed via timers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast-Flipping Commercial Cycles:\u003c\/strong\u003e Ideal for commercial facilities looking to shorten vegetative turnaround times through accelerated root development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil Lightening:\u003c\/strong\u003e Can be used to amend heavy, dense organic potting soils to improve their overall structure, drainage, and oxygen capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48423772520548,"sku":"4665","price":28.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay16_2026_06_26_26PM.png?v=1778927229","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/professor-s-nutrients-coco-perlite-blend-70-30-premium-high-aeration-substrate-50l","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}