{"product_id":"polyplab-genesis-rock-twin-pack-high-surface-area-biological-filter-media","title":"PolypLab Genesis Rock Twin Pack – High Surface Area Biological Filter Media","description":"\u003cp data-start=\"312\" data-end=\"703\"\u003ePolypLab Genesis Rock Twin Pack is a high-performance biological filtration solution designed to dramatically increase beneficial bacterial capacity in both freshwater and saltwater aquariums. Each Genesis Rock provides over 23,000 square feet of surface area, allowing massive bacterial colonisation to naturally reduce ammonia, nitrite, nitrate, phosphate, and other organic waste.\u003c\/p\u003e\n\u003cp data-start=\"705\" data-end=\"1073\"\u003eManufactured from an inert ceramic compound fired at over 600°C, Genesis Rocks are completely reef-safe and will not leach harmful substances. Their unique porous structure supports aerobic bacteria on the outer surfaces while encouraging anaerobic bacteria deep inside, delivering efficient nutrient reduction across multiple stages of the nitrogen cycle.\u003c\/p\u003e\n\u003cp data-start=\"1075\" data-end=\"1245\"\u003eWhether placed in a sump, refugium, or display tank, Genesis Rocks provide long-term biological stability and are ideal for both lightly stocked and high bioload systems.\u003c\/p\u003e\n\u003cp data-start=\"1252\" data-end=\"1269\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1273\" data-end=\"1313\"\u003eTwin pack includes two Genesis Rocks\u003c\/li\u003e\n\u003cli data-start=\"1316\" data-end=\"1358\"\u003e23,000+ sq ft of surface area per rock\u003c\/li\u003e\n\u003cli data-start=\"1361\" data-end=\"1408\"\u003eSupports aerobic \u0026amp; anaerobic bacterial colonies\u003c\/li\u003e\n\u003cli data-start=\"1411\" data-end=\"1466\"\u003eReduces ammonia, nitrite, nitrate, phosphate \u0026amp; organics\u003c\/li\u003e\n\u003cli data-start=\"1469\" data-end=\"1511\"\u003eMade from inert fired ceramic material\u003c\/li\u003e\n\u003cli data-start=\"1514\" data-end=\"1559\"\u003eSafe for freshwater \u0026amp; saltwater aquariums\u003c\/li\u003e\n\u003cli data-start=\"1562\" data-end=\"1613\"\u003eSuitable for sumps, refugiums, or in-tank placement\u003c\/li\u003e\n\u003cli data-start=\"1616\" data-end=\"1674\"\u003eOne rock supports 300–1300 litres depending on bioload\u003c\/li\u003e\n\u003cli data-start=\"1677\" data-end=\"1732\"\u003eBooster pack option available with bacterial supplement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2528\" data-end=\"2844\"\u003ePolypLab Genesis Rock Twin Pack delivers powerful, long-term biological filtration using ultra-high surface area ceramic media. Designed to support complete nutrient reduction, it enhances water clarity, stability, and overall aquarium health—making it an essential upgrade for serious reef and freshwater aquarists. Available now at Reef freaks.\u003c\/p\u003e","brand":"Reef-freaks","offers":[{"title":"Default Title","offer_id":55418400375160,"sku":"POLYPLAB-GENESIS","price":33.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/7115\/3169\/files\/genesis.png?v=1768470573","url":"https:\/\/reef-freaks.co.uk\/products\/polyplab-genesis-rock-twin-pack-high-surface-area-biological-filter-media","provider":"Reef-freaks","version":"1.0","type":"link"}