BioPro Aquarium Filter Floss Pads 50cm x 50cm – 5 Pack

BioPro Aquarium Filter Floss Pads provide fine mechanical filtration to help remove suspended debris from aquarium water. This economical 5 pack contains large 50cm x 50cm polyester filter pads that can be cut to suit many aquarium and pond filter compartments.

Fine aquarium filter floss is ideal as the final mechanical filtration stage after coarser sponge or filter media. It captures smaller particles such as fish waste, uneaten food and plant debris, helping improve water clarity while reducing the amount of solid waste reaching later filter stages.

At a Glance

• 5 large fine filter floss pads
• Each pad measures approximately 50cm x 50cm
• Fine mechanical aquarium filtration
• Helps trap suspended debris and fine particles
• Can be cut to fit a wide range of filters
• Polyester filter material
• Suitable for freshwater and marine aquariums
• Useful in aquarium filters, sumps and suitable pond filtration systems

What Does Aquarium Filter Floss Do?

Aquarium filter floss is a fine mechanical filter media designed to trap small particles as water passes through it. Using fine floss after a coarser sponge can help polish the water and improve clarity.

Filter floss does not replace biological filtration. Its main purpose is to physically capture debris before it can continue circulating through the aquarium or accumulate in biological filter media.

How to Use BioPro Filter Floss Pads

Cut the pad to the size required for your filter and position it so water is directed through the material rather than around it. Where possible, place coarse mechanical media before the fine floss so larger debris is removed first.

Avoid packing the floss too tightly. Compressing fine media can restrict water flow and may cause water to bypass the filter material.

When Should Filter Floss Be Replaced?

Check the floss regularly and replace or clean it when it becomes heavily soiled or begins to restrict water flow. How often this is required depends on aquarium stocking, feeding and the amount of debris produced.

Keeping fine mechanical media clean also helps protect later biological filter stages from excessive solid waste.

Suitable for Freshwater and Marine Aquariums

These BioPro fine filter pads are suitable for freshwater and marine aquarium filtration. Their large cut-to-fit format makes them useful for canister filters, sumps, internal filter chambers and other filtration systems that accept sheet media.

Looking for other mechanical media? Browse our aquarium filter floss, filter wool and mechanical filter media range.

Frequently Asked Questions

Is aquarium filter floss the same as filter wool?

The terms aquarium filter floss and filter wool are commonly used for fine synthetic mechanical filter media designed to trap small suspended particles. This BioPro product is made from polyester.

Where should filter floss go in an aquarium filter?

Fine filter floss is generally most useful after coarser mechanical media. The exact position depends on the direction of water flow and the design of your filter.

Can these filter floss pads be cut to size?

Yes. The large 50cm x 50cm pads can be cut to fit suitable filter compartments and media trays.

Can aquarium filter floss be reused?

Lightly soiled floss may sometimes be rinsed and reused, but fine filter media should be replaced once it becomes heavily clogged, damaged or no longer allows good water flow.

Does filter floss remove ammonia or nitrate?

No. Filter floss is primarily mechanical filtration and traps physical debris. Biological filtration is responsible for processing ammonia and nitrite, while nitrate management requires other filtration and aquarium maintenance methods.