Skip to main content
Home / Pet Supplies & Food / VOONLINE Fish Tank Ultra-Filtration Cotton Filter Cotton Special Filter Media High-Density Purification Material Tear-Off Cashmere Cotton

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Pet Supplies & Food
Origin -
Brand VOONLINE
Material High-Density Synthetic Fiber
Color White
Item Form Sheet (Tear-off)
Filtration Type Mechanical Ultra-Filtration
Reusability Reusable after Washing
Compatibility Universal Fit for Most Filters
Texture Soft Cashmere-like Finish
Primary Function Debris and Particle Removal
Package Contents 1 x Filter Cotton Sheet

6 reviews

A

Anonymous

Mar 27, 2026

Rating: 5/5

Easy to cut to size

As a beginner, I wasn't sure if this would fit my specific filter model. The tear-off design made it super simple to rip off exactly the amount I needed. No scissors required!

A

Anonymous

Mar 25, 2026

Rating: 4/5

Good mechanical filtration

Does a great job catching food debris and fish waste. My water clarity improved within 24 hours. It is slightly thicker than standard pads, so make sure your filter compartment has enough room.

A

Anonymous

Mar 14, 2026

Rating: 4/5

Great value, very soft

The material feels high quality, almost like cashmere as described. It fits perfectly in my hang-on-back filter. I deducted one star only because it requires a bit of rinsing before first use to remove loose fibers.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Reusable and durable

I have washed and reused this sheet three times now without it falling apart. It maintains its structure well and keeps my tank water crystal clear. Highly recommend for anyone looking to save on replacement costs.

A

Anonymous

Mar 07, 2026

Rating: 5/5

Excellent filtration density

This cotton is incredibly dense yet allows good water flow. It traps fine particles that my old filter missed. The tear-off feature makes it easy to customize the size for my canister filter.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for heavy bioload tanks

I run a tank with large cichlids that produce a lot of waste. This ultra-filtration cotton handles the load beautifully without clogging immediately. The high-density material is a game changer.

5 FAQ

Q: Can this filter cotton be washed in a washing machine?

A: We recommend rinsing the cotton gently under running tap water or squeezing it in a bucket of tank water to preserve the fiber structure. Machine washing may be too aggressive and could damage the density.

Q: Is this safe for saltwater aquariums?

A: Yes, the synthetic fibers are inert and safe for both freshwater and saltwater environments. It does not leach chemicals or alter water parameters.

Q: Does this remove ammonia or nitrates?

A: This product is designed for mechanical filtration, meaning it traps physical debris like dirt and uneaten food. It does not chemically remove ammonia or nitrates; for that, you would need activated carbon or biological media in addition to this cotton.

Q: What are the dimensions of the full sheet?

A: The standard sheet size is approximately 100cm x 50cm (39in x 20in), which provides ample material to cut or tear for various filter sizes from small bowls to large canisters.

Q: How often should I replace this if I am reusing it?

A: With proper rinsing after each cleaning cycle, the cotton can last several months. You should replace it when the fibers begin to break down, lose their density, or if water flow becomes permanently restricted despite cleaning.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
CANDLE.LAB | Non-Bleeding, Non-Seeping DIY Scented Candle Solid Thread Pigment - Fluorescent Dye Colors

CANDLE.LAB | Non-Bleeding, Non-Seeping DIY Scented Candle Solid Thread Pigment - Fluorescent Dye Colors

$12.80

Small-Scale Yogurt Production Line, Pasteurized Milk Processing Equipment, Yogurt Sterilization and Fermentation Tank

Small-Scale Yogurt Production Line, Pasteurized Milk Processing Equipment, Yogurt Sterilization and Fermentation Tank

$1,260.00

Blue Field Outdoor Lightweight Wear-Resistant Waterproof Dry Bag for Rafting and Stream Trekking, Storage Pouch for Miscellaneous Items, 10L/20L/40L/70L

Blue Field Outdoor Lightweight Wear-Resistant Waterproof Dry Bag for Rafting and Stream Trekking, Storage Pouch for Miscellaneous Items, 10L/20L/40L/70L

$14.00

[All-Inclusive Flat Rate] Single Imported Dental Implant | Includes Free Cleaning, Abutment, Fixture, and Crown

[All-Inclusive Flat Rate] Single Imported Dental Implant | Includes Free Cleaning, Abutment, Fixture, and Crown

$1,800.00

Acrylic Markers for Kids, Washable Art Watercolor Pens for Elementary Students, Opaque and Layerable, Direct Liquid Ink Core

Acrylic Markers for Kids, Washable Art Watercolor Pens for Elementary Students, Opaque and Layerable, Direct Liquid Ink Core

$19.90

304 Stainless Steel Chain - Long/Short Link Lifting Chain, Hoist Chain, Clothesline, Swing, Pet Chain, Anti-Theft Chain

304 Stainless Steel Chain - Long/Short Link Lifting Chain, Hoist Chain, Clothesline, Swing, Pet Chain, Anti-Theft Chain

$1.53

Wall-Mounted Face Towel Storage Box for Disposable Cleansing Tissues and Cotton Pads, Bathroom Organizer

Wall-Mounted Face Towel Storage Box for Disposable Cleansing Tissues and Cotton Pads, Bathroom Organizer

$19.90

France Arches Watercolor Paper Handmade 100% Cotton Artist Grade Sample Sheets Loose Paper 300G 640G Full Sheet Half Sheet 4K 8K 16K Medium and Rough Texture Watercolor Paint Paper

France Arches Watercolor Paper Handmade 100% Cotton Artist Grade Sample Sheets Loose Paper 300G 640G Full Sheet Half Sheet 4K 8K 16K Medium and Rough Texture Watercolor Paint Paper

$20.80

Premium Ceramic Tea Canister Gift Box – Empty Packaging for Black, Pu'er, White, and Biluochun Tea

Premium Ceramic Tea Canister Gift Box – Empty Packaging for Black, Pu'er, White, and Biluochun Tea

$121.00

Rechargeable Gen 2 Personal Air Purifier with Auto Fan for Travel, Commute, and Flights

Rechargeable Gen 2 Personal Air Purifier with Auto Fan for Travel, Commute, and Flights

$145.00

Roast Duck Warmer Cabinet, Constant Temperature Box, Commercial Crispy Pork Belly Hanging Duck Cabinet, Roasted Chicken and Cooked Food Display Warmer

Roast Duck Warmer Cabinet, Constant Temperature Box, Commercial Crispy Pork Belly Hanging Duck Cabinet, Roasted Chicken and Cooked Food Display Warmer

$318.00

Guangda Dental | Straumann Implant Services for Missing Teeth Restoration (Foshan Branch Only)

Guangda Dental | Straumann Implant Services for Missing Teeth Restoration (Foshan Branch Only)

$2,052.00

Painted Wooden Colored Pencils Set with Gold Powder, Creative Engineering Pencils for Gongbi Coloring, Basic Packaging

Painted Wooden Colored Pencils Set with Gold Powder, Creative Engineering Pencils for Gongbi Coloring, Basic Packaging

$11.12

South Korea Dentium Dental Implant Abutment with Full Ceramic Crown for Missing Tooth Restoration

South Korea Dentium Dental Implant Abutment with Full Ceramic Crown for Missing Tooth Restoration

$1,980.00

Balloon Warm Star Pre-order Unspoken Words Phase 3 17 Years Old Little Bean 'Chance Encounter' Series Merchandise

Balloon Warm Star Pre-order Unspoken Words Phase 3 17 Years Old Little Bean 'Chance Encounter' Series Merchandise

$22.00

Magnetic Punch-free Tissue Holder for Mirror Cabinets and Kitchen Cupboards

Magnetic Punch-free Tissue Holder for Mirror Cabinets and Kitchen Cupboards

$5.73

Industrial Scouring Pad Roll – Abrasive Brushed Cloth for Stainless Steel Polishing and Finishing

Industrial Scouring Pad Roll – Abrasive Brushed Cloth for Stainless Steel Polishing and Finishing

$20.00

DIY Aromatherapy Candle Wax Melting Cup – Stainless Steel Handle Heating Pot with Multi-Size Measuring Spoons and Color Mixing Cup

DIY Aromatherapy Candle Wax Melting Cup – Stainless Steel Handle Heating Pot with Multi-Size Measuring Spoons and Color Mixing Cup

$5.78

7-Piece Square Pot Set B with Tray, Plastic Colorful Succulent Pots, Simple and Durable Design for Root Explosion and Control, White Square Pots

7-Piece Square Pot Set B with Tray, Plastic Colorful Succulent Pots, Simple and Durable Design for Root Explosion and Control, White Square Pots

$53.00

Multi-Layer Over-Toilet Storage Rack, Floor-Standing Laundry Organizer for Bathroom, Balcony, No-Drill Installation

Multi-Layer Over-Toilet Storage Rack, Floor-Standing Laundry Organizer for Bathroom, Balcony, No-Drill Installation

$31.42

Feiyue Car Tires: Sizes 205, 195, 215, 255; Longteng Series 45, 50, 25, 65, 60R16, 17 Rim 8

Feiyue Car Tires: Sizes 205, 195, 215, 255; Longteng Series 45, 50, 25, 65, 60R16, 17 Rim 8

$485.00

2 Pieces Free Shipping Outdoor Rafting Creek Swimming Gear Dustproof Waterproof Bag Wearable or Handheld Ultra-Light Storage Sack

2 Pieces Free Shipping Outdoor Rafting Creek Swimming Gear Dustproof Waterproof Bag Wearable or Handheld Ultra-Light Storage Sack

$8.50

[Dental Implant Chief Specialist] Implant Examination and Treatment Planning

[Dental Implant Chief Specialist] Implant Examination and Treatment Planning

$9.90

Wall-Mounted Toilet Storage Rack - No-Drill Bathroom Shelf Organizer for Above the Toilet

Wall-Mounted Toilet Storage Rack - No-Drill Bathroom Shelf Organizer for Above the Toilet

$26.07

New Wireless Car Vacuum Cleaner, High Suction Home Use, Compact Handheld Silent High-Power Vacuum

New Wireless Car Vacuum Cleaner, High Suction Home Use, Compact Handheld Silent High-Power Vacuum

$114.00

Electric Watercolor Spray Pen Children Hand-painted Color Pa

Electric Watercolor Spray Pen Children Hand-painted Color Pa

$47.55

Cement-Specific Pigment Powder for DIY Crafts, Gypsum Dye for Creative Flower Pot Coloring

Cement-Specific Pigment Powder for DIY Crafts, Gypsum Dye for Creative Flower Pot Coloring

$3.83

9 Garrett iCover 270 Twin 5RX Restech 072.6S28 Turbocharger 20-Dragon 0TXD GT 37042

9 Garrett iCover 270 Twin 5RX Restech 072.6S28 Turbocharger 20-Dragon 0TXD GT 37042

$6,755.00

Household Small Range Hood, Portable USB Desktop Fume Extractor for Living Room Hot Pot and BBQ Odor Removal, Mini Smoke Absorber

Household Small Range Hood, Portable USB Desktop Fume Extractor for Living Room Hot Pot and BBQ Odor Removal, Mini Smoke Absorber

$41.00

Retainer Storage Box, Clear Case for Invisible Aligners with Mirror, Portable Orthodontic Appliance Carrier, Instagram Style

Retainer Storage Box, Clear Case for Invisible Aligners with Mirror, Portable Orthodontic Appliance Carrier, Instagram Style

$13.40