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I’d like to build a pond but my soil doesn’t hold water. What types of liners are there? | Ponds & Lakes Q&A

Q: I’d like to build a pond but my soil doesn’t hold water. What types of liners are there?

Q: I’d like to build a pond but my soil doesn’t hold water. What types of liners are there?

Jasper- Colrain, MA

A: If you have a natural- or clay bottom pond that doesn’t hold much – if any – water, a pond liner may be your only leak-proof option. But before we outline the different types of liners you can use, let’s first discuss what’s currently in your pond.

Many ponds will contain some water. If your pond is more than 25 percent full and you want to install a liner, we recommend you either drain the pond before laying the liner or plan to put two feet or more sand or soil on top of the liner once its installed.

If your pond is less than 25 percent full, you have several liner options, which we’ve outlined below.

Liner Types

Two types of liners are used in pond and reservoir applications: poly vinyl chloride (PVC) and reinforced polyethylene (RPE).

  • PVC is widely used in irrigation reservoirs, detention ponds and golf course ponds. PVC liner is very flexible and cost effective. When installing this type of liner, we recommend your pond’s slope to be 3:1 for cover soil to stay in place, and we suggest you cover the liner with 12 inches of sand or clean soil to protect it from degrading in the sun.
  • RPE is widely used for more durable applications for water activities or in areas that get a lot of wildlife visitors, like agriculture ponds, irrigation reservoirs and golf course ponds. As with the PVC, we suggest you cover the liner with one foot of sand or clean soil where liner could be exposed to sunlight.

Ethylene propylene diene monomer (EPDM) liners are mainly used in small water gardens. The synthetic rubber isn’t durable enough to handle large applications like your half-acre pond. Stick with PVC or RPE instead.

Liner Thickness

In addition to coming in different material types, liners come in different thicknesses. PVC comes in 20 and 30 millimeter thicknesses; RPE comes in 30, 36 and 45 millimeter thicknesses. The higher the number, the more durable and puncture-resistant the liner.

If you have livestock, deer or other wildlife coming in the pond, you’ll need at least a 30 millimeter PVC or RPE liner to withstand those hooves and claws.

Measure Twice, Cut Once

When you’re ready to order your liner, get the measurements of your pond, including its length, width and maximum depth. Plug those numbers into an online calculator, and you’ll find out what size liner you require.

Pond Talk: What are some tips you can share with readers for installing a large pond liner?

Eliminate The Guess Work - Pond Logic(r) ClearPAC(r) PLUS

How can I find a leak in my pond? | Decorative Ponds & Water Gardens Q & A

How can I find a leak in my pond?

Q: How can I find a leak in my pond?

Jan – East Wenatchee, WA

A: Talk about a tough mystery to solve! A tiny hole in your pond liner or one loose plumbing connection could cause a leak that slowly – or quickly, depending on the leak’s size – drains your pond. And that leak could be anywhere.

Where do you begin your search?

Don’t worry. You don’t have to completely drain your pond or rebuild it from the ground up. Try these mystery-busting troubleshooting tips first.

Is the water evaporating?

During the heat of the summertime, you can expect some all-natural water loss. Thanks to evaporation, up to an inch (give or take) of water will naturally disappear from the pond, and if you have a long stream bed with a lot of surface area or a large pond with few floating plants, even more water could transform from liquid to vapor.

If you suspect something fishy, fill the pond back up and keep an eye on the water level. Any more than an inch or so of water loss could indicate a leak.

Are there damp areas around the pond?

If more than an inch or so of water is disappearing daily, one clear clue that could lead to your leak is a damp area around the pond’s perimeter. That water has to go somewhere, and a patch of wet ground is a great place to start looking for its source.

Walk around the pond and carefully inspect the soil for signs of unexplained moisture. If you find some, take a closer look at that spot’s liner and construction.

Is the waterfall to blame?

If you’ve ruled out evaporation and there are no damp areas to be found, your stream or waterfall could be the culprit. Shut down the system and wait for several hours. If the pond’s water level stays the same, then you’ll know the leak is not in the pond itself. It’s likely in the waterfall or plumbing.

Some spots to inspect include tight curves in your stream where water might be splashing out, and plumbing connections on the pump or waterfall where pipe splits or loose connections could be causing the water loss.

Worst case: Let it leak

If the water continues to disappear from your pond after shutting down the waterfall, keep a close eye on the pond’s water level until it stops falling. When it does, that’s when you should look for the leak. Because the water level will stabilize once it lowers past the hole, you should be able to find the problem at or below the water level and fix it.

To repair the leak, you have two options: patch the hole with a 6-inch self-adhesive liner patch or close it up with some underwater sealer, like Gold Label Pond and Aquarium Sealer. The round liner patch has a self-adhesive backing that’s perfect for quick repairs on small cuts in EPDM liner. The underwater sealer, which works on wet or dry surfaces, instantly repairs leaks in rubber and vinyl liners, as well as concrete, stone, wood, plastic, glass and ceramic surfaces.

Good luck – and happy leak-hunting!

Pond Talk: How did you solve your most mysterious pond leak?

Underwater Pond Sealer - Patch Leaks, Even Underwater!

Pondless or pond? Why not have both! | Decorative Ponds & Water Gardens Q&A

Pondless or pond? Why not have both!

Pondless or pond? Why not have both!
Alvin – Boulder, CO

One of the greatest elements of decorative ponds and water features is that each can be as unique and distinguished as the person creating it. The shape, style and implementation of your water garden is limited only by your imagination. It is this freedom to inspire and create that keeps pond owners incessantly engaged in the hobby.

In previous blogs we have discussed the different types of ponds and water features available along with some of the perks and drawbacks of each type. While any of these water features, waterfalls, and ponds are great on their own, you can also incorporate the different feature types to create a truly breathtaking water feature.

A great example of combining feature types into one functional display is the combination of an elevated pond that cascades down into a pondless waterfall. Think of this feature as a pondless water fall type water feature with a pond half way through the waterfall. Combining these two features opens up possibilities that may have been impractical with a certain feature alone. Pond owners with children are often drawn to pondless features as there is no potentially hazardous standing water body for them to wander into. By elevating the pond to a height that is out of reach you can still enjoy the freedom to incorporate fish and plants into your water feature while the pondless waterfall safely returns water underground and out of reach. As you will have to purchase the major components for either a pond or water fall feature, adding the additional parts to incorporate the two features together is easier and more cost effective than having to buy items for two separate features. Both Pond Kits and Pondless Waterfall Kits are available for purchase to eliminate the guesswork of what items your need to construct either particular feature. To simplify the purchasing process you can purchase a Pondless Waterfall for the main components and some additional 45Mil Rubber EPDM Liner and Seam Tape to construct the elevated pond.

Laying out and combining advanced water features and ponds may require expert advice or guidance. You can eMail, or call and a pond guy or gal will help you choose the products that will need for your water feature. When constructing any type of pond or water feature it is imperative that you take your time and plan accordingly to ensure a smooth and enjoyable pond building process.

Pond Talk: What types of pond types have you combined in your water feature? Share your photos and stories for inspiration.

Pond Kits

Lining Your Pond with a Pond Liner – Pond & Lake Q & A

20 mil PVC Liner Installation in Fenton, MI

Q: I built a home a few years ago and in the process we needed a large amount of fill dirt. Under the recommendation of my builder we decided to dig a pond for the fill dirt. I was told by my excavator that it would take several months for my pond to fill. It is now 3-years later and I have no water! Over the last several years I have tried lining my pond with blue clay and bentonite with no success. I know you sell liners. Will they work for a ½ acre pond? – Rick of Illinois

A: Yes. A pond liner is the only way you can guarantee to have a leak proof seal.

If you would like to explore the possibility of a liner, then you will need to gather a few pieces of information so we can best help you:

1) Existing Water – Many ponds retain some water. We do not recommend lining a pond that contains more than 25% of its fill capacity for any extended period of time. Unless you plan to put at least 2’ of soil on top of the liner or make provisions to drain the water from under the liner.

2) Measure Your Pond – This is best accomplished by using a flexible tape measure (available at Home Depot / Lowes). Stretch the measuring tape from water line to water line allowing the tape to contour to the pond’s bottom. In general, we recommend adding an additional 5′ to 10’ to this number to make up for the liner settling and the anchoring trench.

3) Give us a call 866-766-3435 or click here to visit our website for more information.

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