100 Micron PP Felt Aquarium Filter Sock with 4" Plastic Ring

What’s aquarium filter socks?

AALfilter’s aquarium filter socks are essential for maintaining pristine water quality in both freshwater and saltwater aquariums. Designed for use in sump filtration systems, these high-performance socks trap fine particulate waste, uneaten food, detritus, and organic debris before they can break down and affect your water chemistry.

Crafted with durable polyester and equipped with sturdy plastic rings, our filter socks are easy to install, replace, and clean—making them a favorite among hobbyists and professional aquarists alike. Whether you're managing a reef tank, freshwater planted aquarium, or a large pond, our fish tank filter socks help keep your system clean and healthy.

Key Features of aquarium filter socks

l Heavy-Duty Construction: Made of thick, industrial-grade polyester with triple-stitched seams for long-lasting performance.

l Two Common Sizes: Available in 4-inch and 7-inch plastic ring diameters to fit standard sump filter sock holders.

l Multiple Lengths: Choose from short (~8"), medium (~10–11"), and long (~16") options to suit your sump configuration.

l Micron Ratings: Available in both 100 micron (fine filtration) and 200 micron (standard filtration) pore sizes.

l Easy Maintenance: Integrated ring handles for quick removal. Reusable and washable using bleach-safe methods.

l Compatible with Most Sumps: Designed not to touch the bottom of the sump, ensuring optimal water flow and filtration.

l Optional Filter Sock Holders: Secure your socks with 4” or 7” holders for stable, leak-free operation.

Specifications 

Note: Avoid cutting any excess stitching—leave as-is or glue down if needed.

Applications

l Aquarium Sump Filters – Ideal for saltwater, freshwater, and reef aquariums.

l Fish Tank Filtration – Effective at removing suspended particles and organic waste.

l Pond Filtration Systems – Use our drawstring filter bags for gravity-fed pond filters.

l Mechanical Pre-Filtration – First line of defense in multi-stage filtration setups.

l Water Polishing – Temporarily switch to 100-micron socks to achieve ultra-clear water.

l Aquarium Maintenance – Prevent buildup of phosphates and nitrates by regular sock replacement.

When to Replace or Clean

1. Replace filter socks when seams open or holes appear.

2. Clean dirty socks before they overflow to avoid nutrient buildup.

3. Most users clean every 1–7 days, depending on tank bio-load.

4. Wash with bleach (no soap) and rinse thoroughly before reuse.

Tip: Collect multiple dirty socks and wash them together for efficiency. Store in a sealed bucket to reduce odor.

Buy the Right Filter Sock Today

At AALFilter, we offer a complete line of aquarium filter socks, fish tank filter sock holders, and other filtration accessories. Keep your aquatic ecosystem balanced and beautiful—shop now for premium-quality filtration solutions.

Frequently Asked Questions (FAQ)

Q1: What is the difference between 100 micron and 200 micron filter socks?
A: A 100 micron filter sock has finer pores and can trap smaller particles, resulting in clearer water. However, it clogs faster than a 200 micron sock and may require more frequent cleaning.

Q2: How often should I change or clean my aquarium filter sock?

A: It depends on your tank's bio-load, but most users clean or replace filter socks every 1–3 days in reef tanks, or once a week in standard freshwater tanks. Always change them before they overflow.

Q3: Can I wash and reuse the filter sock?

A: Yes, this filter sock is reusable. You can rinse it thoroughly or wash it in a washing machine with bleach (no detergents). Be sure to rinse well and let it dry completely before reuse.

Q4: Will this filter sock fit my sump system?

A: This filter sock features a standard 4-inch plastic ring, compatible with most aquarium sump filter holders. Please confirm your holder size before purchase.

Q5: What material is the filter sock made of?

A: It is made from high-quality polypropylene (PP) felt, known for its durability, fine filtration performance, and resistance to chemical degradation.

Q6: Is this filter sock suitable for saltwater and freshwater tanks?
A: Yes, it is ideal for both saltwater and freshwater aquarium systems, including reef tanks, planted tanks, and fish-only setups.