{"product_id":"et-terr-draining-substrate-2kg-pt3115","title":"Exo Terra Terrarium Draining Substrate 2kg – PT3115","description":"\u003cp\u003eThe Exo Terra Terrarium Draining Substrate (PT3115) is a natural, non-organic drainage layer designed to sit beneath the decorative top substrate in a bioactive or planted vivarium. It solves one of the most common problems in tropical terrarium setups: waterlogged substrate leading to rot, anaerobic conditions, and failing live plants. Whether you're running a full bioactive build or simply want to maintain a healthier water table in your enclosure, this drainage layer does the foundational work.\u003c\/p\u003e\u003ch3\u003eNatural, Non-Decomposing Composition\u003c\/h3\u003e\u003cp\u003eUnlike organic substrates that break down over time, this draining substrate is non-organic, meaning it will not rot, decompose, or contribute to bacterial contamination in the base of the terrarium. It maintains its structure and function long-term, making it a reliable part of any bioactive setup.\u003c\/p\u003e\u003ch3\u003eDrainage and Biological Filtration\u003c\/h3\u003e\u003cp\u003eWater passes through the decorative top layer and into this drainage substrate, where it is held clean and separate from the upper substrate. The drainage layer functions as a biological filtration system, keeping that retained water in a condition where it can be actively recirculated — through waterfalls, rain systems, or dripping plant features — without becoming stagnant or foul.\u003c\/p\u003e\u003ch3\u003ePreventing Substrate Mixing\u003c\/h3\u003e\u003cp\u003eTo keep the drainage substrate and your chosen top layer fully separated, it is designed to be used alongside a draining mesh layer placed between the two substrates. This prevents the substrates from gradually mixing over time, which would compromise drainage performance and contaminate the water reservoir below.\u003c\/p\u003e\u003ch3\u003eCompatible with Water Recirculation Systems\u003c\/h3\u003e\u003cp\u003eThe clean water collected within the drainage layer can be drawn back into active terrarium features such as waterfalls, rain systems, or dripping plant setups. This makes it a practical component in more complex vivarium builds where humidity cycling and water movement are part of the environmental strategy.\u003c\/p\u003e\u003cp\u003eFor any keeper building a bioactive tropical vivarium, this 2kg bag provides the drainage foundation that keeps the rest of the enclosure functioning as it should — protecting your substrate, your plants, and your animals from the effects of standing water.\u003c\/p\u003e","brand":"Peregrine","offers":[{"title":"Default Title","offer_id":54148448354641,"sku":"SHD002","price":7.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/0403\/8225\/files\/SHD002_1.jpg?v=1782599384","url":"https:\/\/viperia.co.uk\/products\/et-terr-draining-substrate-2kg-pt3115","provider":"Viperia UK","version":"1.0","type":"link"}