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Nubios CR-500 Ceramic Ring 500 g
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The Nubios CR-500 Bio Filter Ceramic Rings are a cornerstone biological filter media for any serious aquarium setup. Whether you’re running a freshwater community tank, a planted aquascape, a shrimp tank, or a marine reef, a thriving colony of nitrifying bacteria is the invisible engine that keeps your water safe and your fish healthy. The Nubios CR-500 gives those bacteria the ideal home to grow, multiply, and work continuously on your behalf.
High-temperature fired ceramic — precision engineered porosity
Each ring in the CR-500 range is produced from an exceptional raw ceramic material and subjected to a carefully controlled high-temperature firing process. This creates a rigid, chemically inert ring with a dense network of micro-pores running throughout its structure. The porous matrix provides an enormous colonisable surface area far exceeding that of plastic or standard bio-balls — giving beneficial bacteria like Nitrosomonas and Nitrobacter vastly more attachment points to establish large, stable biofilm colonies that efficiently convert toxic ammonia (NH₃) into nitrite (NO₂) and then into the far less harmful nitrate (NO₃).
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