A fascination with Koi often devolops in to an obsession, but enthusism for collecting and showing these beautiful fish must be coupled with a clear understanding of how you can provide the ideal environment for them.

The Pre-Planning phase is the most important step when you build a Koi Pond, make sure and take your time when planning your pond designs. You will save time and money when you pre-plan your pond designs. The worst thing you can do is build on a whim.

The first thing to do is plan your budget. Make sure you know what you need and what it will cost. The larger the pond the larger the expense will be. That means the size of your budget will determine the size of your pond.

If you skip purchasing essential items (koi pond filter, UV ultraviolet light, and pump) it will leave you with a bad outcome and you will walk away aggravated with the experience.

If you do not feel up to the job you can always leave it to the experts.

The easiest way to build a a koi pond is to create a working ecosystem within the fish pond. The way to create this ecosystem is to combine the following elements. Leaving any of these features out, will cause more difficulties in establishing a balanced ecosystem not to mention more time and money spent on maintenance.

• Purification system: A Biological filter or Pond filter In a closed water feature (i.e. non-spring fed) you need both a mechanical filter to handle larger debris and a biological filter to remove excess nutrients which cause green, murky water.

• Pond Pumps: Recirculation of a closed water feature is essential to add oxygen to the water for fish and bacteria. In addition, recirculating water keeps it fresh and allows gases to escape.A waterfall is an excellent way to add oxygen to you Fish Pond

• Koi Pond Liner and Underlayment: To greatly reduce water loss to the soil, an impermeable membrane (liner) is mandatory for small water features (under 1000 sq. ft.). A 45 Mil EPDM Rubber Pond Liner is recommended. To pad the liner, an underlayment is recommended. Woven underlayment will allows gases to escape and unlike sand, an underlayment will pad the vertical edges of the liner.

• Plants, Fish and Bacteria: Plants remove nutrients from the water for their own nourishment. Fish eat insects and in turn fertilize the plants. Bacteria eat the nutrients that create green, murky water therefore keeping the pond clear. Note: Eliminating any one of these variables in attempt to cut corners when you build a Koi Pond, will increase maintenance and decrease water clarity. By establishing a working ecosystem you work with nature instead of against it.

If you need help picking out your Pond Filter Click Here

The reason why ponds do not turn out right is that most people do not do enough research and have insufficient equipment.

A couple of points to remember: DO NOT Line the Bottom of the Pond with Rocks! The Bigger the Pond - the Easier to Maintain! To keep your pond clear install a UV Light.

Here are some water features that you will need when you build a Koi Pond, and what functions they perform.

However, it will also increase the oxygen content of the water in another way, because as it splashes into the pond it will create a disturbance at the surface and this will have the effect of increasing the surface of the water to the air, so more oxygen can be absorbed.

For this system you will need a pipe connecting the main water supply to the pumping system or to replace lost water you can use a fine nozzle spray hose as this will dissipate much of the chlorine into the atmosphere.

Overflow

You will need to allow for an overflow on occasions of heavy rain which suddenly overload the pond water. Pipes can be placed around the pond just above the water surface, or they can be placed upright. In either case they will exit into the drainage system. Be sure they are covered with a suitable wireweld mesh so the smaller fish will not be carried away. The system described will circulate the water and oxygenate it but it will not remove debris, so this is the need for the bottom drain.

Bottom Drain

When using an external pump you must have a way to pull the water out of the pond. There are several drain methods available: bottom drains that install through the liner, vacuum bottom drains that sit on top of the liner and strainer baskets that cover the end of a hose to prevent fish from being sucked into it.

The most low-maintenance method is installing a 3" bottom drain through the liner. Both the vacuum bottom drain and the strainer caps are unable do as good of a job as one installed into the floor of the pond. Even a 2" bottom drain with the anti-vortex cover is not as good as the black-domed 3" bottom drain because it traps leaves and large debris at the cover and does not allow it to go out of the pond and into the leaf basket of the external pump. That trapped debris has to be pulled off periodically with a net or pole of some kind so there is a little more work to it. Although the 3" dome allows leaves and large debris to leave the pond it also sucks in small fish so one has to accept that he will need to rake off the top of the 2" periodically if his fish are less than 6" long.

The drain cover is best made from an inert material such as PVC so it will not rust or release chemicals in so doing.

Where the bottom drain is located can mean the difference between a "self-cleaning" pond and one that needs attention. It should be placed at the deepest part of the pond and the floor of the pond should slant gradually down to the drain to encourage all the debris to fall toward the drain. It should be installed half-an-inch lower than the pond's floor and be located as far away from the water return as possible to encourage healthy water circulation.

• Pond Liners allow you to be more creative with the shape of your pond. You must conform to the manufacturer’s idea of the perfect pond if you use a preformed shell.
• None that I know of come in four feet depths - a must if you want to offer your fish protection from predators. You will also need this depth to be able to overwinter your Koi.
• It saves you no time to put a preformed pond into the ground. In fact, it costs you another step to backfill to fit the shape of the shell.
• You can not put maintenance-saving bottom drains in the hard plastic shells.
• When the ground shifts (as it often does) the form will shift with it and your carefully constructed leveling job will be for naught.
• Forget putting that beautiful large boulder on the lip of the preformed shell. It will crack under the weight.
• And when it cracks let us know if the patching material stays on for more than a month.