Application guide
Pebbles for Water Features
Water changes stone. Colours deepen, texture reads more strongly, and material that looked ordinary dry can become the focal point of a feature. Black and dark grey stone gain the most from this effect, which is why they dominate contemporary water design.
The practical concerns are movement and cleaning. Stone that is too small washes into pumps and outlets; stone too large leaves visible gaps in shallow water.

Suitable pebble types
- Black pebbles
- Polished pebbles
- River rocks
- Natural river pebbles
Recommended sizes
20–50 mm inside the water body; larger rocks as placed accents.
Recommended finish
Polished stone holds its appearance best where it is permanently wet.
Colour selection
Dark stone gives depth and hides algae staining longer than pale stone in outdoor features.
Quantity considerations
Aim for a single continuous layer, roughly 1.5 times the stone diameter in depth.
Estimate your requirement
Installation tips
- 1Rinse stone thoroughly before placing it in the feature to avoid clouding the water.
- 2Keep pump intakes screened and clear of loose stone.
- 3Place larger rocks first, then fill between them with smaller material.
Maintenance
- Lift and rinse stone when algae builds up.
- Check the pump intake during each cleaning cycle.
Recommended products for water features and fountains
- Black PebblesDeep charcoal-to-black stone that anchors contemporary schemes and looks striking in water.
- Polished PebblesTumbled and polished stones with a deeper colour and a subtle sheen — the choice for display areas and interiors.
- River RocksLarge water-worn stones for dry stream beds, pond edges and feature planting.
- Natural River PebblesWater-worn stones with a soft matte surface and mixed earthy tones — the everyday workhorse of garden landscaping.
Topic hub
Part of our water feature, aquarium and drainage pebbles guide
Stone selection where water is involved — features, tanks, drainage and filter beds.
Read the water feature, aquarium and drainage pebbles hub →Products in this topic
Where it is used
Water features and fountains — frequently asked questions
Planning a water features and fountains project?
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