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)
Ningbo Manufacturer Display and Storage Rack, Wall-Mounted Tire Storage for Home Garage, Customizable Wall Tire Rack

Ningbo Manufacturer Display and Storage Rack, Wall-Mounted Tire Storage for Home Garage, Customizable Wall Tire Rack

$237.60

Universal Low-Temperature 3D Printing Pen Filament PCL, Eco-Friendly Material Wire 1.75mm Compatible with Deli Pens, 40 Color Options

Universal Low-Temperature 3D Printing Pen Filament PCL, Eco-Friendly Material Wire 1.75mm Compatible with Deli Pens, 40 Color Options

$3.80

Automatic Feeder - Stainless Steel Food Machinery Accessory Equipment

Automatic Feeder - Stainless Steel Food Machinery Accessory Equipment

$20,150.00

Henkel Loctite Super Glue Series: 401, 406, 460, 480, 495, 4011, 4161, 496, 382, 410

Henkel Loctite Super Glue Series: 401, 406, 460, 480, 495, 4011, 4161, 496, 382, 410

$28.00

Over-Toilet Storage Rack with Tissue Organizer for Bathroom, Vanity, and Shower Gel - Multi-Use Bathroom Shelf

Over-Toilet Storage Rack with Tissue Organizer for Bathroom, Vanity, and Shower Gel - Multi-Use Bathroom Shelf

$27.66

15-inch Carbon Fiber FPV Drone Frame - High-Strength Quadcopter Aerial Photography Chassis Direct Sale

15-inch Carbon Fiber FPV Drone Frame - High-Strength Quadcopter Aerial Photography Chassis Direct Sale

$396.44

Petal-Shaped Ceramic Tea Scoop and Holder for Gongfu Tea Ceremony

Petal-Shaped Ceramic Tea Scoop and Holder for Gongfu Tea Ceremony

$97.00

Scented Candle Waxing Cotton Wick with Base Wick Fixer Sticker DIY Materials

Scented Candle Waxing Cotton Wick with Base Wick Fixer Sticker DIY Materials

$0.35

Stainless Steel Fish Tank Converter - Bucket to Aquarium Adapter with Inverted Stand and Faucet Spout for Mineral Water Jugs

Stainless Steel Fish Tank Converter - Bucket to Aquarium Adapter with Inverted Stand and Faucet Spout for Mineral Water Jugs

$13.58

Non-woven Cleaning Cloths, Lint-free Wiping Rags, Oil-absorbing Paper, Machine Cleaning Cloth, Dust Removal Cloth for Subway Use (No Washing Required)

Non-woven Cleaning Cloths, Lint-free Wiping Rags, Oil-absorbing Paper, Machine Cleaning Cloth, Dust Removal Cloth for Subway Use (No Washing Required)

$138.00

Large Paint Brush Set - Watercolor Pen Kit for Children's Day Art and Drawing

Large Paint Brush Set - Watercolor Pen Kit for Children's Day Art and Drawing

$31.25

Foldable Car Tire Stone Removal Tool, Explosion-Proof Scraper Hook for Extracting Pebbles from Tires

Foldable Car Tire Stone Removal Tool, Explosion-Proof Scraper Hook for Extracting Pebbles from Tires

$19.53

Black Swan Watercolor, Gouache, and Acrylic Paint Brush Set - Professional Art Painting Tools for Numbered Paint-by-Number Kits

Black Swan Watercolor, Gouache, and Acrylic Paint Brush Set - Professional Art Painting Tools for Numbered Paint-by-Number Kits

$6.80

Jiangchuan 800 Roll-to-Roll Oil-Heated Roller Heat Transfer Machine – Digital Sublimation Printer for Curtain Fabric Rolls

Jiangchuan 800 Roll-to-Roll Oil-Heated Roller Heat Transfer Machine – Digital Sublimation Printer for Curtain Fabric Rolls

$147,743.75

Traditional Handcrafted Wooden Rattle for Newborns – Safe for Teething, Intangible Cultural Heritage Toy

Traditional Handcrafted Wooden Rattle for Newborns – Safe for Teething, Intangible Cultural Heritage Toy

$10.10

All-Season Quiet and Comfortable Vacuum Tires for Buick Enclave 2013-2014 - Custom Fit, Wear-Resistant

All-Season Quiet and Comfortable Vacuum Tires for Buick Enclave 2013-2014 - Custom Fit, Wear-Resistant

$458.00

Mia Core Paper Stump and Blending Knife Set, Double-Ended Blending Pen for Sketching, Art Student Drawing Tools (S/M/L)

Mia Core Paper Stump and Blending Knife Set, Double-Ended Blending Pen for Sketching, Art Student Drawing Tools (S/M/L)

$4.28

Feileniao Gongbi Painting Draft Sheets – Pre-Outlined Bird-and-Flower Designs on Sized Xuan Paper for Color Filling Practice

Feileniao Gongbi Painting Draft Sheets – Pre-Outlined Bird-and-Flower Designs on Sized Xuan Paper for Color Filling Practice

$8.42

Automatic Retractable Air Hose Reel, Electronic Drum, Water Drum, Yarn Clamp, Air Pump Hose for Auto Repair, Beauty, Gardening, and Washing

Automatic Retractable Air Hose Reel, Electronic Drum, Water Drum, Yarn Clamp, Air Pump Hose for Auto Repair, Beauty, Gardening, and Washing

$280.00

LA Curved Surface Screen Printing Machine - Automatic Cup Printer, Cylindrical Net Printer for Cosmetic Bottles

LA Curved Surface Screen Printing Machine - Automatic Cup Printer, Cylindrical Net Printer for Cosmetic Bottles

$26,750.00

Bathroom Toilet Storage Rack - Over-Toilet Shelf for Bathroom, Restroom, Washing Machine with Flip Lid - Space-Saving Organizer

Bathroom Toilet Storage Rack - Over-Toilet Shelf for Bathroom, Restroom, Washing Machine with Flip Lid - Space-Saving Organizer

$59.00

Heavy-Duty Chain Slings for Lifting Rebar and Steel - Manganese Steel Lifting Chains

Heavy-Duty Chain Slings for Lifting Rebar and Steel - Manganese Steel Lifting Chains

$113.00

Toilet Storage Rack - No-Drill Bathroom Organizer for Restrooms and Washrooms

Toilet Storage Rack - No-Drill Bathroom Organizer for Restrooms and Washrooms

$14.80

Shuhai Blanching and Scalding Machine Fully Automatic Fresh Steam FVJ Vegetable Cooking and Cooling Equipment Enoki Mushroom Shiitake Blanching Flow Cooling

Shuhai Blanching and Scalding Machine Fully Automatic Fresh Steam FVJ Vegetable Cooking and Cooling Equipment Enoki Mushroom Shiitake Blanching Flow Cooling

$18,900.00

PELICAN 1020 Waterproof Case - Compact Protective Box for Earphones with Free Shipping

PELICAN 1020 Waterproof Case - Compact Protective Box for Earphones with Free Shipping

$40.00

Marie's Collapsible Brush Washing Bucket Art TEP Watercolor Chinese Painting Brush Rinser Portable Silicone Extendable Small Paint Washing Bucket for Art Students

Marie's Collapsible Brush Washing Bucket Art TEP Watercolor Chinese Painting Brush Rinser Portable Silicone Extendable Small Paint Washing Bucket for Art Students

$12.50

Duosoduoxi Black Series Paper Blending Stumps (6-Pack) - Elastic Xuan Paper Tools for Art Exams and Sketch Highlighting

Duosoduoxi Black Series Paper Blending Stumps (6-Pack) - Elastic Xuan Paper Tools for Art Exams and Sketch Highlighting

$5.10

Factory Direct 502 Super Glue - Instant Adhesive, 3-Second Bond, High-Strength Fast-Drying Glue for Furniture and Wood Repair

Factory Direct 502 Super Glue - Instant Adhesive, 3-Second Bond, High-Strength Fast-Drying Glue for Furniture and Wood Repair

$1.28

NORTON Industrial Red Scouring Pad for Stainless Steel Brushing, Polishing, and Rust Removal – Fine Grit Abrasive Cloth

NORTON Industrial Red Scouring Pad for Stainless Steel Brushing, Polishing, and Rust Removal – Fine Grit Abrasive Cloth

$17.50

Bucket Pack Soft-Tip Glitter Markers, Non-Toxic Washable Color Pens for Student Art and Drawing, Gel Highlighters

Bucket Pack Soft-Tip Glitter Markers, Non-Toxic Washable Color Pens for Student Art and Drawing, Gel Highlighters

$2.99