FILTER MEDIAPhosphate control & water clarityGFO and activated carbon for stable nutrients and polished aquarium water. HomeFilter Media Products Reactor-ready media chosen for consistent contact time, clean starts and the same quality bar as Nereus hardware. Filter MediaActivated CarbonClear water. Clean chemistry. Nereus Activated Carbon is a premium, aquarium-grade carbon chosen for polishing reef systems: removing dis…Filter MediaGFOHigh-capacity phosphate control for serious reefs Nereus GFO granular ferric oxide is selected for reef aquariums that need reliable phos…
