Keep Your Tank Water Fresh and Clear
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A simple way to help your fish feel at home.
This six‑in‑one Aquarium Filter Cotton makes aquarium care feel easy. It slides into most fish tank filter setups and helps pull out everyday impurities so your water stays clear and welcoming. The cotton is made without glue, stays sturdy, and lets water flow smoothly. It’s a friendly upgrade for any aquarium hobbyist who wants cleaner water with less fuss.
Clean water. Happy fish. Peace of mind.
✔ Helps filter out impurities for clearer water
✔ Soft, glue‑free cotton that stays gentle on your setup
✔ Strong water flow for steady filtration
✔ Durable design that lasts through regular tank care
Available sizes: S (50 x 11 cm), M (40 x 30 cm), L (50 x 40 cm), XL (120 x 30 cm), XXL (120 x 50 cm). Trim to fit your aquarium filter if needed.
We are proud to offer duty-free, reliable, tracked shipping— delivered to your door in over 200 countries worldwide!
Below you can check our average shipping times:
Domestic USA Shipping: 2-9 business days
US & Canada: 7-18 days
Europe: 7-18 days
Europe Plus*: 8-30 days
Australia, New Zealand: 7-18 days
Hong Kong, Singapore: 7-18 days
Rest of the world: 8-30 days
*does not include processing times up to 2 business days or longer in peak periods
Primarily we ship out from fulfillment centers in the United States, Eastern Asia and Western Europe. If the item you've purchased is out of inventory in your nearest location, we'll send it directly from our production lines at the same delivery times as stated in our shipping section.
Is this filter cotton safe for all aquarium types?
Yes. It works well in most freshwater and marine tanks and fits many common fish tank filter systems.
Can I cut the cotton to fit my filter?
Yes. The cotton can be trimmed to match your filter shape or size.
How often should I replace it?
Replace it when it looks worn or clogged. Timing depends on your tank size and fish load.
Helps remove everyday impurities so your aquarium stays bright and inviting.
Strong water permeability keeps your filtration system working naturally.
Made without glue to stay gentle and fish‑friendly.
Holds up well through regular aquarium maintenance.
Simple to place into most filter setups for quick upgrades.
A reliable upgrade for everyday aquarium care
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Basic impurity filtration | ||
| Six‑in‑one cotton layers | ||
| Glue‑free construction | ||
| Strong water permeability | ||
| Durable structure | ||
| Easy trimming for fit | ||
| Gentle for fish and plants | ||
| Maintains water clarity | ||
| Fits many filter styles |
Yes. Choose the size closest to your filter or trim the cotton for a snug fit.
Yes. The glue‑free material is gentle and helps keep water comfortable for sensitive species.
It may soften water flow slightly, but its main job is filtration, not noise control.
A light rinse may help briefly, but replace it once it becomes worn or clogged.
Yes. You can trim the cotton to match most hang‑on‑back filter slots.
Yes. Many hobbyists use it as a pre‑filter or fine polishing layer inside canister trays.
Yes. It works in both freshwater and marine aquariums.
No. The cotton is neutral and simply helps trap debris.
The cotton features a six‑in‑one structure, though thickness varies slightly by batch.
