Red Sea Filter Media Cup

The Red Sea Filter Media Cup is a versatile 4" filter cup designed for use with the latest V3 Reefer systems and as a perfect retrofit for previous Reefer generations. Compatible with any 4" filter sock chamber, it offers a simple, reusable, and highly effective way to run carbon, GFO, or polishing floss for improved water clarity and nutrient control.

 

Key Benefits

• Retrofits perfectly into all Red Sea Reefer models

• Fits any 4" diameter filter sock housing

• Ideal for carbon, GFO, and fine mechanical filtration

• Reusable design—no more throwaway filter socks

• Improves water clarity and enhances overall filtration

 

Core Features

• Standard 4" Diameter Fit
  Designed to integrate seamlessly into V3 Reefer systems and most 4" filter sock chambers.

• Flexible Media Use

  • Granular activated carbon

  • GFO and other granular media

  • Filter floss for extra water polishing

• Durable and Reusable
  Built to last, offering a cost-effective alternative to disposable filter socks.

• Optimised Flow
  Allows consistent water movement through your chosen media for stable, effective filtration.

 

Technical Specifications

• Diameter: Standard 4"

• Compatibility: All Red Sea Reefer systems (including V3) and most 4" sock chambers

• Media Types Supported: Carbon, GFO, filter floss, other granular media

• Use Case: Mechanical and chemical filtration enhancement

 

Who is this product for?

• Reefer owners upgrading or retrofitting filtration

• Marine hobbyists wanting flexible, reusable mechanical or chemical filtration

• Aquarists seeking improved water clarity and nutrient control