Black Knight Vortex Brush

Black Knight Vortex Brushes offer an easy, effective solution for preventing cloudy water, reducing the risk of disease, and stopping filter blockages.

Designed to capture suspended particles that traditional vortex chambers can miss, these brushes deliver powerful mechanical and biological filtration in one compact, affordable system. Simply coil the brushes into your circular filter chambers and watch them quickly collect vast amounts of waste.

Why Do You Need Vortex Brushes?

While vortex chambers are excellent at settling heavier debris, they struggle to remove lightweight particles. These fine particles often flow straight through the transfer port into the next chamber, causing unwanted buildup.
Black Knight Vortex Brushes solve this problem by capturing the fine waste that doesn’t have time to settle, improving clarity and reducing maintenance across your entire system.

How Black Knight Vortex Brushes Work

1. Physical Filtration

The dense, interlocking filaments physically trap large particles that cannot pass through the tight weave.

2. Static Charge Collection

Each filament carries a natural static charge that attracts and holds finer particles as they pass by, keeping them in place until your next cleaning.

3. Biological Filtration

After a few weeks of use, the huge surface area becomes colonised by millions of beneficial nitrifying bacteria. These microbes help biologically purify your pond water, creating a healthier environment for fish and plants.

How to Use

Insert one or more Vortex Brushes directly in the path of flowing water. You’ll see a dramatic increase in captured waste within a short time.

If subsequent chambers already contain media, place a single brush around the transfer port or create a full barrier across the chamber’s cross-section—above the inlet and below the outlet.

The brushes allow heavy debris to sink while forcing all remaining particles to pass through, ensuring maximum filtration efficiency.

You can coil brushes around the outlet so all exiting water must flow through them.

Use Vortex Brushes in as many chambers as needed. Leave some open space in the first chamber for settlement, and fill later chambers with brushes or filter media for optimal results.

Tip: The more brushes you use, the more waste you can capture—and the greater the biological filtration capacity.

Maintenance

Cleaning frequency depends on pond size, filter size, fish load, feeding habits, and environmental debris.
General guidance:

Lightly stocked ponds: Clean every 2–3 weeks in warm months.

Heavily stocked ponds: Clean up to twice a week.

To Clean:

Drain the chamber and rinse brushes using buckets of pond water.

Or remove the brushes, rinse, and replace.

Chlorinated tap water can be used, but note that it temporarily reduces biological activity.

The Ultimate All-In-One Pond Filtration Solution

With outstanding mechanical waste capture and enormous biological surface area, Black Knight Vortex Brushes provide unmatched performance and exceptional value for money. Keep your pond clearer, healthier, and easier to maintain. All with a simple, cost-effective upgrade to your filtration system.