Suggestions On How To Build A Pond With HDPE Geomembrane Liners For Landscapes

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Suggestions On How To Build A Pond With HDPE Geomembrane Liners For Landscapes

Dec 09, 2019

If you have customers interested in having a pond installed in their landscape place, take a look at a few recommendations from Yingfan on building a pond, as well as choosing a location, filtration system and more.

Location and access
Choosing the location of where your customer wants the pond installed and decide whether it's really the best placement. Frequently, customers will ask to have ponds installed in an area of the landscape that's unused or in a lower area that will collect a fair amount of water, but both of these can be ultimately proven to be bad choices.

When an area of the yard goes unused, there's usually a reason which is it seems to be a place where no one really goes. 

Low spots in the yard are challenging to build in, and since there will be excess runoff water and pollutants going into the area, the water quality will suffer greatly.

Steep and shallow
When digging a deeper pit without adding provisions for shallow areas, stacking stones on the inside of the pond can prove difficult. The excavation will be unstable so that there aren't any shallow areas, wich will be dangerous and difficult to get in and out of the pond for maintenance purposes.

With no ledges, it becomes difficult to disguise a bowl-shaped pond with rocks since gravel will slide towards the deeper areas and boulders would take up too much space.

Another mistake commonly made is making the pond too shallow. If your customers want to have fish in their pond, digging it too shallow will cause the pond to not stay cool enough for the fish.

Proper filtration
Some customers might operate under the incorrect assumption that their backyard pond doesn't need a filter, as the streams funcion in natural ponds is just fine without them, but this is incorrect, as they are both very different in terms of hydrology.
There are three types of pond filters: biological, mechanical and chemical/sterilizer.

Biological filters will work by breaking down pond wastes and converting them into compounds that are less harmful and can be used as fertilizer for any aquatic plants.
In biological filtration, nitrifying and facultative bacteria will absorb ammonia and turn nitrites into nitrates. If your customers want this type of filter, be sure to let them know that it will need to run 24/7 because if the pump shuts down, the bacteria can quickly use up the oxygen and die.

Mechanical filters will trap and remove sediment and debris, which will keep the water clean. Typical examples of mechanical filters are skimmers and pre-filters for pumps. Since these filter types will remove larger particles of waste, they will need to be cleaned more frequently. Under the umbrella of mechanical filters comes sedimentation and skimmer filters.

Sedimentation filters will allow particles that are heavier than water to go to the bottom of the pond where they will be removed through a filter that's hooked to the bottom of the drain. Since they only remove larger particles, they have to be installed where they can be fed by gravity.
In the realm of skimmers, there are both box and floating options, and both will filter the water by removing waste and floating debris before it goes to the bottom of the pond.
Sterilizers will pass water through a tube that houses an ultraviolet bulb, which will kill living microscopic particles in the water. This type of filter is used to clear up algae blooms that will cause green water and they will control parasites.

Underlayment and HDPE Geomembrane Liners Cusions
Before installing the HDPE Geomembrane Liners, you'll need to choose a cusion to install, as this will help prevent any punctures that may occur from the ground underneath.

There are plenty of materials that have been used as cusion liners, but their recommendation lies with material that is easy to use, cost effective and readily available, such as a Non Woven Polyester/Polypropylene Geotextile Fabric.

Not only does the cusion provide protection from rough underlying surfaces, but it also allows the ground to breathe from underneath. Having this fabric down can help natural gases to escape from under the liner instead of being trapped, which can then cause gas bubbles under the liner which will push up into the pond.

Another factor to keep in mind is the pond's liner, never even consider using a liner if it doesn't come with a long-term warranty.
While weathering can eventually take a toll on most liners, even ones with warranties, the sun is the primary cause of deterioration in most pond liners. If the pond is built properly with gravel and boulders covering the liner, the liner will be better protected from the sun and its lifespan should be extended beyond the warranty time.

Check out a few different liner options recommended by Yingfan.

Shanghai Yingfan Environmental Engineering Co., Ltd.