Reef Diaper Disposable Filter Sock Elements for 4-inch Flange Assemblies — 30 Pack

Effortless filtration with disposable filter socks

Reef Diaper disposable filter sock elements offer a clean, hassle-free filtration media for 4-inch flange assemblies. Instead of washing or squeezing used socks, you simply swap in a fresh element. The top flange assembly remains reusable, while new elements are quick to install, helping you minimize downtime between maintenance sessions.

Why this design stands out

The pleated filter element exposes more surface area — over 300 square inches — delivering robust filtration capacity that rivals typical 200 micron felt socks. This design aims to deliver steady flow and consistent filtration across a range of aquarium setups, from thriving reefs to mixed tanks.

• Disposable elements provide a clean start every time, reducing the mess of sock cleaning.
• Low-cost alternative to bulky roller filter systems while maintaining similar filtration capacity.
• Compatible with both freshwater and saltwater setups, offering flexibility for hobbyists with multiple tanks.
• Fast swap is possible in seconds; no tools required beyond the flange assembly.

Usage tips and setup

To use, you will need a 4-inch flange assembly (sold separately or in the Reef Diaper starter kit). Install a new filter element, attach the reusable flange, and you are ready to run. For best results, replace the sock about twice per week to help sustain filtration performance and maintain water clarity in your aquarium.

What’s in the 30-pack

• 30 disposable filter sock elements—ready for quick replacements.
• Designed for use with Reef Diaper 4-inch flange assemblies (sold separately or in the starter kit).
• A simple, low-cost solution for ongoing filtration without weekly washing.

This product supports maintaining a clean, consistent filtration workflow for both freshwater and saltwater aquariums.