1. Fish tank filter wadding (biochemical cotton) has advantages such as good breathability and strength, low filtration flow resistance, high filtration efficiency, repeated water washing, durability, economy, and environmental protection.
2. Long service life, ensuring no loosening after more than 5 years of use in water.
3. Environmentally friendly materials.
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DF-02
Doer
Introducing the Ultra-Trapping 3D Spiral PET Filter Cotton, a high-performance mechanical filter wool designed to redefine water purification for aquatic environments and industrial applications. Crafted with advanced nonwoven technology, this 3D Spiral PET Filter Cotton features a unique structure that enhances debris capture while maintaining optimal water flow. Whether you’re a hobbyist tending to a home fish tank, a professional managing aquaculture systems, or seeking reliable filtration for commercial spaces, this filter cotton delivers consistent results. It combines durability, efficiency, and eco-friendliness to become an indispensable tool for water quality improvement, targeting waste, residues, and impurities that compromise aquatic health or system performance.

The 3D Spiral design of the filter cotton creates a multi-layered trapping network, maximizing contact with water and capturing even fine particles. Its superior breathability ensures low flow resistance, allowing water to circulate freely without straining pumps or filtration systems. This balance of filtration efficiency and airflow keeps water clear and oxygenated, supporting healthy aquatic life and preventing clogs that reduce system lifespan.
Made from high-quality PET (polyester) material, this filter cotton boasts impressive strength and resilience. It withstands repeated water washing without loosening or degrading, making it a cost-effective and sustainable choice. Unlike disposable filters that generate waste, this reusable filter wool maintains performance over long-term use, reducing replacement frequency and environmental impact.
Prioritizing safety for both aquatic ecosystems and users, the filter cotton is crafted from eco-friendly materials that meet global standards. It is free from harmful substances, ensuring no leaching of toxins into water. This makes it ideal for sensitive environments like planted tanks, fish ponds, and drinking water treatment auxiliary systems, aligning with green practices for home and industrial use.
Offering flexible sizing and shape options, the customizable filter cotton adapts to diverse needs. Whether you require specific dimensions for a wall-mounted filter, drip filter box, or large aquarium bottom filter, it can be tailored to fit seamlessly. The plain style and medium-weight thickness further enhance its compatibility with various filtration setups, from small home fish tanks to large-scale swimming pools and industrial pipelines.

This mechanical filter wool is constructed from 100% polyester, a material renowned for its durability and filtration capabilities. It utilizes needle-punched nonwoven technics, which reinforce the structure for long-lasting performance and consistent particle retention. The filter cotton features a high-density pattern that boosts trapping efficiency while maintaining breathability. Its plain style ensures easy integration with different filter types, and it holds certifications including ISO9001 and OEKO-TEX STANDARD, validating its quality and safety. Suitable for both residential and commercial use, it accommodates diverse applications without compromising on performance. The raw material can be customized based on specific requirements, and logo printing is available for branding needs.
Feature | Mothproof, Eco-Friendly, Breathable... | Material | 100% Polyester |
Pattern | High density | Use | Home Textile, Hospital, Agriculture, Bag,.. |
Place of Origin | Guangdong, China | Applicable to the Crowd | Women, Men |
Nonwoven Technics | Needle-Punched | Supply Type | Make-To-Order |
Technics | Nonwoven | Thickness | Medium Weight |
Type | Filter Non woven Fabric | Weight | 50gsm |
Width | 10-500cm customized | Model | DF-02 |
Brand Name | DOER NONWOVEN | Style | Plain |
Product name | Ultra-Trapping 3D Spiral PET Filter Cotton with 30x30cm | Size | Free cutting service Customized Size |
Shape | Customer's Demand | Thickness | 20-3000mm Customized |
Suitable for | Aquqriums Tank,Pond, swimming pool | Logo | Customized Logo |
Packing | Customized Package or Vacuum extractable | Certification | ISO9001/OEKO-TEX STANDARD,... |
Raw Material | Polyester OR customized | Sample | Freely Offered |
| Packaging and delivery | ||
Selling Units | Single item | Single package size |
Single gross weight | 3.000 kg | 50X50X50 cm |
Ideal for aquariums, fish tanks, planted tanks, and fish ponds, the filter cotton effectively removes waste, food residues, and suspended particles. It improves water clarity and quality, creating a healthy habitat for fish, plants, and other aquatic organisms. Whether used in home hobby setups or professional aquaculture facilities, it supports optimal water conditions for growth and survival.
Beyond aquatic use, this filter cotton serves multiple industrial purposes. It is suitable for sewage sludge treatment plants, water treatment facilities, and cooling towers, aiding in impurity removal and system maintenance. It also functions in car paint shops and factory paint shops for oil-water separation and condensate noise reduction, ensuring clean operations and compliance with environmental standards.
The filter cotton is compatible with central air conditioning pipelines, helping to filter air and maintain system efficiency. It is also a reliable choice for swimming pools, where it traps dirt and debris to keep water safe and clear for use. Its versatility extends to agricultural applications, such as egg harvesting, where clean water is essential for product quality.
Wall-mounted filter
Large aquarium bottom filter
filter bucket
Upper filter box
Cleaning fish tank
Drip filter box

The product holds ISO9001 certification, along with OEKO-TEX STANDARD 100 and GRS (Global Recycled Standard) certifications. It also has test reports including REACH, RoHs, and formaldehyde compliance, ensuring it meets international quality and safety standards.
Yes, bulk orders are eligible for discounted pricing. The exact rate depends on the order quantity and specific requirements, and our team can provide a customized quote based on your needs.
Lead time typically varies based on order quantity and production schedule, but it is generally negotiable. After confirming payment and specifications, we work to fulfill orders in a timely manner to meet your project deadlines.