Pond Design

Designs shown are to demonstrate engineering features that are typical. Many options are substituted in building ponds and ultimately gives us all our own personalized design. The diagrams are given to help understand concepts. Understanding them all will eventually aid in an overall better design and functioning pond.


Gunited concrete ponds are built using the same process that cement swimming pools are built. The Gunite concrete has a fluffier mix due to the injection of air into the mix when applied. Resulting in a much stronger concrete.

Alternate design for the outlined area would be to not use a filtering system that requires being under pressure. The option would be to continue the free flow water from the vortex separator into a non-pressurized filtering system. The pump would then draw the water from the filter and pump back towards the U.V. Light and water feature.

A Gunite Pond Design:
Gunite Pond Design Diagram

Liner Ponds

Very much the same as above, except using the Firestone EPDM 45 Mil. thick liner instead of Gunite. Using a liner for the water proof membrane costs about 1/3 that of Guniting. Then for those that thought that they built the pond big enough the first time, it can be drained and removed in a day or so if you used a liner. Not possible if you have a Gunite pond.

Rubber Liner Koi Pond Design Diagram

Pond Design Features

Features in the above pond designs, provide engineering that is proven in creating eco systems that work well. Most successful ponds incorporate almost all or more of the features shown.

Jets benefit surface flow of debris towards the skimmer and increase oxygen content for promotion of beneficial bacteria. The skimmer removes most debris from the surface before it has a chance to settle. Bottom drains pull settled debris into settling tank and or filtering. The Filtering system should have mechanical stages for separating solids. (Pump Basket, etc.) Then the water passing through the filter is biologically filtered before returning towards the pond. Ultraviolet filtering (U.V. Light) when used follows the bio-filter stage and kills both waterborne Algae and many forms of harmful bacteria.

Moving water is vital to the overall health of the pond. Water features not only add beauty and sound, they add oxygen and mild current to the pond. The steeper pond sides add protection to the fish from predators. Steeper sides also permit better settling of debris to the bottom for removal and doesn't collect clutter. No rocks in the bottom permit a cleaner and healthier pond. The fish swimming near the bottom disturb some of the bottom debris, enabling it another opportunity to be collected in the bottom drains.

So as you can see, each of the features help complete a good working design that promotes a healthier environment for keeping fish. With the right design and right equipment, your far more likely to always have a clear pond to enjoy.

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