FlowCore Cup

Upgrade to Sock-Free Filtration

The FlowCore Cup is a reusable filter cup designed to replace traditional filter socks with a simpler, more efficient system. Instead of washing and rotating dirty socks, just drop in poly filter media, let it do the work, and swap it out when it’s dirty. Clean, fast, and way less hassle.

How It Works:

•  Insert poly filter media into the cup
•  Water flows through while debris is captured
•  Remove and replace the media when dirty
•  Rinse the cup and reuse

Why Switch from Filter Socks?

•  No more washing or rotating socks
•  Faster maintenance—swap media in seconds
•  Consistent water flow with less clogging
•  Customize filtration by using different poly media types

Designed for Performance

•  Open lattice design supports strong, even flow
•  Holds filter media securely in place
•  Durable, reef-safe construction
•  Fits standard filter sock holders

Available Sizes: 4" and 7"

Standard: Fits most sump filter sock holders

Compact: Ideal for smaller systems or tight spaces.

Simplify Maintenance: When the media gets dirty, just toss it and replace it—no scrubbing, no soaking, no downtime. The cup itself rinses clean in seconds and is ready to go again. Built for Reefers by a Reefer! Perfect for reef tanks, frag systems, and high-bioload setups where easy, reliable mechanical filtration matters.