Ways & How

How to Build a Fish Pond

How to Build a Fish Pond

The mechanics on how to build a fish pond will depend heavily on what it’s going to be used for. Will it be a large pond for kois or an ordinary one for some goldfishes? There are also water gardens for both goldfishes and aquatic plants or just plants alone. It’s also a different story if you intend to add a fountain or waterfall to the setting. There are specific requirements for each kind of fish pond, depending on the climate of the local area. Just remember that it needs some sunlight for at least four hours and a biological filter. Read more to get an idea of what to prepare:

  1. Plan out the structure of your pond and take note of the measurements. Make it 2-feet deep for goldfishes, but a bit deeper in areas experiencing freezing cold weather. Kois will need at least a 3-foot deep pond. Lay the shape by marking it with a rope and go for the maximum length and width possible in the available spot. It’s never a problem making a bigger pond than what you anticipated. People often end up making ponds that are too small, so make sure to add allowances.


  2. Do the digging based on your structured layout. Dig about one foot deeper if you are planning to plant along its perimeter and give more allowance to the width to anticipate the blooming season of the plants. Prepare for the placement of the waterfall or fountain facing the slope at the other end to give it a well-balanced layout.

  3. Determine the proper placement of pond filters when installed externally. You may have to bury pond skimmers just near the pond. The need for a ditch cannot be eliminated whether using a skimmer or submersible pump. Just use different routings. Connect the ditch from the skimmer to the pond filter that is installed externally if using a submersible pump. Dig the ditch leading to the external pump, and another one starting from the pump to the external filter.

  4. Mark the excavation with underlayment for the pond to enhance proper leveling. Equip yourself with scissors so that you can be flexible with the linings and tape them together to avoid them from being disfigured.

  5. Attach the actual pond liner made of rubber into the excavated pool and stretch it out evenly by flattening the wrinkles and folds. You might not be able to get rid of some markings, but they should disappear when the water is filled up.

  6. Do further excavation for the streams and waterfalls. The waterfall tank can be the external filter positioned to spill into the pond. If you wish to have a small stream connecting to the pond, this is the time to excavate it, which should only be a few inches deep. The pond liner must be placed with some overlapping into the pond.

  7. Install the pond liner to the skimmer based on the product’s instructions. Attach the piping with some extra length in case adjustments need to be made later.

  8. Decorate the edges of the pond with stones. Large ones are more likely to stay in place than smaller stones, so no need to mortar them. Pump in water to the pond, allowing it to spill for a few inches just to make corrections on the rubber folds.

You may need the help of a professional when learning how to build a fish pond; however, feel free to experiment on a smaller scale if you have the skill. Don’t forget to de-chlorinate the pond before adding the plants.


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