Koi ponds

Koi ponds, built for the fish

A koi pond is a different proposition from a wildlife or natural pond, because it is built around the health and the viewing of the fish. Koi need clean, well-oxygenated, well-filtered water and enough volume and depth to thrive, so a proper koi pond is as much a filtration system as a feature. We build them to suit the fish and to show them off.

Volume, depth and filtration

The fundamentals decide whether koi stay healthy: enough volume and depth to keep conditions stable through the year, dedicated filtration sized for the fish load, and good circulation. We design the pond around those needs, with bottom drains and the right pump and filter system, rather than treating filtration as an afterthought.

Designed for viewing

A koi pond is meant to be watched, so we design the depth, the edges and the access to show the fish at their best, whether that is a formal raised pond by a terrace or a larger pond set into the garden. The look and the engineering are designed together.

Built to last

A koi pond is a permanent piece of construction, built properly so the structure, the filtration and the circulation all last. Arrange a consultation and we will design one to suit your garden and your fish.

• 01

  Aquascape ecosystem pond

  The Aquascape ecosystem pond, built as a Certified Aquascape Contractor: a low-maintenance, balanced, living pond.

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• 02

  Pondless waterfalls

  A waterfall and stream with no open pool: the sound and movement of water, safe around children.

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• 03

  Wildlife ponds

  Naturalistic wildlife ponds with gently shelving margins and native planting, built to draw life in.

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• 04

  Water features

  Bespoke water features, from formal rills to natural rock springs, designed into the wider garden.

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• 05

  Convert a swimming pool to a natural pond

  Turn a tired or costly swimming pool into a chemical-free natural swimming pond, often reusing the existing structure.

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• 01

  Aquascape ecosystem pond

  The Aquascape ecosystem pond, built as a Certified Aquascape Contractor: a low-maintenance, balanced, living pond.

  Read
• 02

  Water features

  Bespoke water features, from formal rills to natural rock springs, designed into the wider garden.

  Read

Source: Gardenscape. Figures as of 2026-06-03.

• What does a koi pond need that an ordinary pond does not?

  Clean, well-oxygenated, well-filtered water and enough volume and depth for the fish to stay healthy. A koi pond is as much a filtration system as a feature, with dedicated filtration, circulation and often bottom drains.

• How deep does a koi pond need to be?

  Deeper than most garden ponds, to keep conditions stable through the year and give the fish room. We design the depth and volume around the fish load and the setting.

• Can a koi pond be a feature by the terrace?

  Yes. A formal raised koi pond by a terrace shows the fish off beautifully, or it can be set into the garden. We design the look and the engineering together.

• Do you build the filtration as well?

  Yes. The filtration and circulation are the heart of a healthy koi pond, so we design and build them as an integral part, sized properly for the fish rather than added on.