4 in 150 Micron Honeycomb Filter Socks 20 Pack - Clearer Aquarium

Our review of the 4 in 150 micron honeycomb filter socks looks at whether this 20 pack delivers consistent fine filtration for reef and freshwater hobbyists. The bottom line: these filter socks are aimed at aquarists who change filter media regularly and want reliable removal of suspended solids without impeding flow. The unique 3D honeycomb structure and non-woven material work together to trap finer debris than a plain sock, and the 20-count package makes routine replacement simple for tanks that use 4 in ring filter socks.

Key Features

• Honeycomb structure: The 3D honeycomb design captures fine impurities more efficiently than flat-fiber socks, improving overall water clarity.
• 150 micron rating: This pore size removes suspended solids and fine particulates while maintaining useful mechanical filtration for most aquariums.
• Non-woven material: The durable, high-quality fabric offers good water permeability so flow remains unobstructed during normal use.
• 20 pack convenience: With twenty identical filter socks included, frequent scheduled changes are easy to maintain without running out of replacements.
• Compatible sizing: The 4 in ring by 11.8 in length fits standard 4 in holders, including common canister and sump filter placements.

Who It's For

The 20 pack of 4 in honeycomb filter socks is best for hobbyists running sumps or filter boxes that accept 4 in sock rings and who prefer to replace socks on a regular schedule rather than clean and reuse. It is particularly helpful for tanks where improved mechanical polishing is desired to reduce cloudiness and capture detritus before it breaks down.

Those who should look elsewhere include aquarists who need ultra-fine micron ratings below 150 for specific filtration targets, or users who want reusable or washable media to reduce waste. Also double-check your filter holder diameter and depth before buying to ensure the 11.8 in length and 4 in ring fit your system.

Pros & Cons

Pros

• Effective at removing suspended solids thanks to the honeycomb filter structure.
• The non-woven fabric balances durability with good water permeability for steady flow.
• Twenty socks per pack supports routine scheduled replacement without frequent reorders.
• Standard 4 in ring and 11.8 in length fit many common sump and filter setups.

Cons

• 150 micron is not the finest option available for those needing ultra-polishing under 100 micron.
• Single-use style increases ongoing consumable cost compared with washable alternatives.

Specifications

Brand	beaufan
Count	20 pack
Ring diameter	4 in
Length	11.8 in
Micron rating	150 micron
Material	High quality non-woven fabric

Our Verdict

For aquarists who swap filter socks on a schedule, this 20 pack offers solid value: the honeycomb design and non-woven material provide reliable mechanical filtration and sustained flow, and the 4 in by 11.8 in size fits standard housings. It is a practical choice for routine maintenance, though those seeking finer polishing or reusable options should consider alternatives.

Frequently Asked Questions

Will these socks fit my 4 in filter holder?
They are sized with a 4 in ring and 11.8 in length to fit most standard 4 in holders and sump filter boxes; measure your ring diameter to confirm.

How often should I replace them?
Replacement frequency depends on bioload and flow, but the 20 pack is intended to support regular changes rather than long-term washing and reuse.

Do they restrict flow?
The non-woven material is designed for good water permeability so normal flow is maintained, though heavy clogging will reduce flow until changed.