Red Sea Reefer Filter Media Cup for Aquarium

The Red Sea Reefer Filter Media Cup is a simple yet smart upgrade for your reef aquarium filtration system. Designed to replace traditional filter socks, this reusable media cup offers hobbyists greater flexibility and convenience. Red Sea Aquarium Filter Media Cup Crafted from durable, high-quality plastic, it easily fits into Red Sea’s Reefer sumps and can hold a variety of filter media such as carbon, GFO, bio-media, or even filter floss. This versatility allows you to customize your filtration to meet the specific needs of your tank, whether you’re reducing phosphates, polishing water, or boosting biological filtration.

Unlike disposable socks, the media cup is easy to clean and maintain—just remove, rinse, and reuse. Its best fish tank filters are a practical choice for aquarists who want to save time while keeping their water crystal clear. Whether you’re a beginner or seasoned reefer, the Red Sea Reefer Filter Media Cup helps you simplify maintenance and achieve a healthier, more stable aquatic environment.

• Rinse thoroughly before first use
• Handle with care to avoid cracking or damage
• Ensure proper placement to prevent floating or displacement
• Do not use with media that requires fluidized bed operation
• Keep away from direct heat sources or flames

• Place desired filter media in the cup chamber
• Position cup in sump according to manufacturer guidelines
• Ensure proper water flow through the media
• Regular maintenance based on media type and bioload