Aussie Gold Grit Brush – Black Spot Algae Brush for Concrete & Pebble Pools (PHG-40-91002)

The Aussie Gold Grit Brush — SKU PHG-40-91002 — is a heavy-duty pool algae brush designed specifically for removing black spot algae from concrete, pebblecrete, and tile pool surfaces. The stiff grit bristles provide the abrasive scrubbing action needed to break through the protective outer layer of black spot algae colonies, which standard nylon brushes cannot penetrate.

Important: This brush is designed for concrete, pebblecrete, and tile pools only. Do not use on fibreglass or vinyl liner pools — the grit bristles will scratch and damage these surfaces.

Key Features

• Heavy-duty grit bristles — abrasive enough to break through black spot algae
• Designed for concrete, pebblecrete, and tile pool surfaces
• Blue handle with pole attachment hole for standard pool pole
• Compact head size for targeted scrubbing of affected areas
• Not suitable for fibreglass or vinyl liner pools

Product Details

• Brand: Aussie Gold
• SKU: PHG-40-91002
• Bristle type: Grit (abrasive)
• Suitable surfaces: Concrete, pebblecrete, tile
• Not suitable for: Fibreglass, vinyl liner
• Pole connection: Standard pool pole fitting

Frequently Asked Questions

What is black spot algae and why is it hard to remove?

Black spot algae (also called black algae) is a type of cyanobacteria that embeds itself into the pores of concrete and pebblecrete pool surfaces. Unlike green algae, black spot has a tough, protective outer layer (a waxy coating) that shields it from chlorine and standard brushing. To treat black spot effectively, you need to physically break through this outer layer with an abrasive brush before applying algaecide or superchlorinating — which is exactly what the grit bristles on this brush are designed to do.

Can I use this brush on my fibreglass pool?

No — this brush is not suitable for fibreglass or vinyl liner pools. The abrasive grit bristles will scratch and damage the gelcoat surface of a fibreglass pool or puncture a vinyl liner. For fibreglass pools, use a soft nylon bristle brush instead. Contact us if you need a brush recommendation for your pool surface type.

How do I treat black spot algae effectively?

For best results: (1) Brush the affected areas vigorously with the grit brush to break through the protective outer layer. (2) Apply a black spot algaecide directly to the brushed areas. (3) Superchlorinate the pool. (4) Brush again after 24 hours. Repeat the process as black spot algae can be persistent and may require multiple treatments. Maintaining adequate chlorine levels and regular brushing helps prevent recurrence.

Does this brush fit a standard pool pole?

Yes — the brush handle has a standard pool pole attachment hole that fits most Australian pool poles. If you need a compatible pool pole, contact us and we can advise on suitable options.