{"product_id":"polyplab-genesis-rock-pack-4-pack-ceramic-biological-filter-media","title":"PolypLab Genesis Rock Pack (4 Pack) – Ceramic Biological Filter Media","description":"\u003cp data-start=\"309\" data-end=\"649\"\u003ePolypLab Genesis Rock Pack (Rock Only, 4 Pack) is a high-capacity biological filtration solution designed for aquariums that demand powerful, long-term nutrient control. Manufactured from a 100% inert ceramic compound fired at over 600°C, Genesis Rocks are built to last for years while providing exceptional bacterial colonisation.\u003c\/p\u003e\n\u003cp data-start=\"651\" data-end=\"1042\"\u003eEach block delivers over 23,000 square feet of surface area, allowing beneficial bacteria to thrive and naturally reduce ammonia, nitrite, nitrate, phosphate, and dissolved organic compounds. The ultra-porous structure supports aerobic bacteria on the outer surfaces and anaerobic bacteria deep within the block, enabling efficient filtration across all stages of the nitrogen cycle.\u003c\/p\u003e\n\u003cp data-start=\"1044\" data-end=\"1287\"\u003eSuitable for both freshwater and saltwater aquariums, Genesis Rocks can be placed under sand beds, within refugiums, sumps, or discreetly hidden in aquascapes—making them a flexible and powerful filtration upgrade for high-bioload systems.\u003c\/p\u003e\n\u003cp data-start=\"1294\" data-end=\"1313\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1317\" data-end=\"1358\"\u003e4-pack of Genesis Rock ceramic blocks\u003c\/li\u003e\n\u003cli data-start=\"1361\" data-end=\"1404\"\u003e23,000+ sq ft of surface area per block\u003c\/li\u003e\n\u003cli data-start=\"1407\" data-end=\"1450\"\u003eLong-lasting inert ceramic construction\u003c\/li\u003e\n\u003cli data-start=\"1453\" data-end=\"1498\"\u003eSupports aerobic \u0026amp; anaerobic bacterial growth\u003c\/li\u003e\n\u003cli data-start=\"1501\" data-end=\"1551\"\u003eHelps reduce ammonia, nitrite, nitrate \u0026amp; phosphate\u003c\/li\u003e\n\u003cli data-start=\"1554\" data-end=\"1603\"\u003eSuitable for freshwater \u0026amp; saltwater aquariums\u003c\/li\u003e\n\u003cli data-start=\"1606\" data-end=\"1664\"\u003eCan be placed in sumps, refugiums, sand beds, or aquascape\u003c\/li\u003e\n\u003cli data-start=\"1667\" data-end=\"1708\"\u003eIdeal for high bioload and predator tanks\u003c\/li\u003e\n\u003cli data-start=\"1711\" data-end=\"1748\"\u003eSafe, non-leaching, and reef-friendly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2675\" data-end=\"2968\"\u003ePolypLab Genesis Rock Pack (4 Pack) offers extreme biological filtration capacity using ultra-porous ceramic media engineered for long-term performance. Designed for demanding systems and heavy bioload aquariums, these blocks provide natural nutrient reduction and exceptional water stability. Available now at Reef freaks.\u003c\/p\u003e","brand":"Reef-freaks","offers":[{"title":"Default Title","offer_id":55418417906040,"sku":"779598","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/7115\/3169\/files\/polyplab_genesis_rock_pack_rock.png?v=1768471536","url":"https:\/\/reef-freaks.co.uk\/products\/polyplab-genesis-rock-pack-4-pack-ceramic-biological-filter-media","provider":"Reef-freaks","version":"1.0","type":"link"}