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The Daily Insight

What are the steps in fish pond construction?

Author

Eleanor Gray

Updated on April 29, 2026

What are the steps in fish pond construction?

Build your pond in successive steps:

  1. clear all vegetation, rocks, etc.
  2. remove the top soil and keep it aside.
  3. mark the limits of the inside banks at ground level.
  4. mark the limits of the inside banks at bottom level.
  5. dig inside these last limits by layers of 20 cm (upper end) to 30 cm (lower end)

How do you build a concrete fish pond?

  1. Select a suitable area for your pond. You will require a filter, pump or both, so make sure there’s an electrical power point near by.
  2. Mark the outline of your pond.
  3. Excavate the pond.
  4. Allow for the overflow drain.
  5. Allow for your filter.
  6. Line with ‘Forticon’ plastic and mesh.
  7. Pour the concrete.
  8. Add river pebbles.

How thick does concrete need to be for a pond?

4 to 6 inches thick
The basic construction of a concrete pond follows that of the liner ponds. The concrete should be 4 to 6 inches thick. Once the dimensions are established and an outline laid out, dig out the soil for the entire pond.

What is the minimum depth for a fish pond?

As a general rule of thumb, a pond should be 60cm (2ft) deep if you want plants and fish in it. Water that’s too shallow is vulnerable to evaporating in warm weather and freezing in winter.

What is the best depth for a pond?

Having most of a ponds depth between 10-12 feet is ideal. The ideal average water depth is 8 feet.

How thick does a pond wall need to be?

You’ll need a three inch thickness for a small pond, but this should be increased to 4+ inches for a medium to large sized area.

Is cement safe for pond fish?

Cement products are safe for pond use. Some people with expensive Koi prefer smooth surfaces so the fish can’t cut themselves.

Can fish live in concrete ponds?

Concrete ponds can be “cured” and made safe for fish without any special coatings. Keep the newly constructed pond filled for a week, then drain and refill.

Does a concrete pond need to be sealed?

However, concrete is a porous material and can eventually leach lime and other chemicals into your pond unless you seal the pond with a waterproofing compound. The market provides different products that provide a flexible, rubber-like, waterproof coating for your concrete pond.

Does a pond need a pump?

Although a water garden or pond without fish can subsist well with a pump that runs intermittently, a pond with fish requires a continuous-duty pump. That pump should be designed specifically to run continuously. Other kinds of pumps may burn out after a short period, such as a few months.