{"product_id":"tub-outlet-extension-modular-flood-height-adjuster-bag-of-10","title":"Tub Outlet Extension – Modular Flood Height Adjuster (Bag of 10)","description":"\u003csection\u003e\n  \u003ch3\u003eTub Outlet Extension – Modular Flood Height Adjuster (Bag of 10)\u003c\/h3\u003e\n  \u003cp\u003eCustomise your hydroponic system's drainage and flood levels with precision using the Tub Outlet Extension. Designed as a modular addition to standard flood and drain bulkhead fittings, these extensions allow you to control exactly how much nutrient solution remains in your tray or reservoir. By simply pressing the extension into your existing outlet and topping it with a protective screen, you can raise the overflow point to suit your specific root zone requirements. Whether you are managing a shallow propagation tray or a deep-water ebb and flow system, these extensions provide a simple, leak-free way to fine-tune your garden’s irrigation dynamics.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Customising flood heights in Ebb \u0026amp; Flow systems, setting minimum drainage levels in reservoirs, and modular height adjustments for deep grow trays.\u003c\/p\u003e\n  \n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModular Stackable Design:\u003c\/strong\u003e Engineered for versatility, these extensions can be used individually or stacked together, allowing you to reach any desired flood height without the need for permanent modifications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Level Control:\u003c\/strong\u003e Ideal for \"setting\" the depth of your nutrient solution, ensuring that your medium stays hydrated at the optimal level while preventing over-saturation or accidental dry-outs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFriction-Fit Installation:\u003c\/strong\u003e Designed for a secure, tool-free installation; simply press the extension into your tub outlet for a firm hold that remains watertight under standard system pressures.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUV-Stabilised Durability:\u003c\/strong\u003e Manufactured from high-quality, horticultural-grade plastic that resists the intense UV radiation of grow lights and the corrosive nature of concentrated mineral salts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Specifically designed to fit standard SeaHawk and similar hydroponic tub outlets, ensuring a seamless integration into your existing plumbing setup.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBulk Value Pack:\u003c\/strong\u003e Supplied in a bag of 10, providing enough components to outfit multiple trays or build a complex, multi-tier flood and drain system.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Modular Tub Outlet Extension\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 Pieces per Bag\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-Impact, UV-Resistant Polymer\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Compatible with standard 19mm\/Outlet Bulkheads\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Ebb \u0026amp; Flow Systems and Reservoir Drainage Management\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eGrower's Best Practices\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSetting the Flood Level:\u003c\/strong\u003e For most Ebb \u0026amp; Flow setups, aim to have your nutrient level reach approximately 2\/3 of the way up the growing medium. Add or remove extensions to achieve this \"sweet spot\" for maximum oxygen and nutrient uptake.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReservoir Drainage:\u003c\/strong\u003e Use an extension in the bottom of a reservoir to ensure a \"settling zone.\" This prevents the pump from sucking up heavy sediment or mineral precipitates that can collect at the very bottom of the tank.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSecure Seating:\u003c\/strong\u003e Always ensure the extension is pressed firmly and squarely into the outlet. Top with a screen to prevent substrate (like clay pebbles) from entering the drain line.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDeep-Water Flood \u0026amp; Drain:\u003c\/strong\u003e Building high-volume systems that require deeper nutrient immersion for large root masses.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePropagation Trays:\u003c\/strong\u003e Adjusting the depth for rockwool cubes or small pots where only the bottom few centimetres need to be flooded.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEmergency Overflows:\u003c\/strong\u003e Creating a secondary, higher-level drain in reservoirs to prevent spills in the event of a float-valve failure.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48410763034724,"sku":"6394","price":36.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay14_2026_12_09_58AM.png?v=1778688773","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/tub-outlet-extension-modular-flood-height-adjuster-bag-of-10","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}