Compare + Shop Waterfall Kits - Page 9 >

Scroll To Top

Pond Free Information

Compare EPDM & PVC Liners

45-Mil EPDM Pond Liner

  • Adapts readily to a variety of applications
  • Remains flexible in extreme temperatures
  • Contains no plasticizers that can crack and split
  • Readily accepts pipe and hose penetrations
  • Certified fish and wildlife safe
  • 25-year warranty

20-Mil Pond Liner

  • Protect PVC liner from direct UV exposure
  • Adapts readily to pond and pondless waterfalls
  • Attaches easily to waterfalls, weirs and skimmers
  • Certified fish and wildlife safe
  • Budget-friendly option
  • 5-year warranty

Calculating Water in Transit (Streamway Length)

Water in transit is the total volume of water that is moving in your system. This is used for figuring the size the basin needs to be. Use the equation below to calculate the amount of water in your feature.

 

L x W x 0.25 x 7.48= Water in transit (WIT)

L represents the length of the waterfall and streamway
W is the width of the waterfall and streamway
0.25 is the depth of the streamway in ft.
7.48 is the number of gallons that 1 cubic foot can hold

* This average does not account for pooling areas. Pooling areas do not flow through the system the same as WIT. The volume of pooling areas should be measured separately and factored into basin volume as a “one-time fill”.

Example (refer to illustration):

5' in Length (1' + 2' + 6" + 1' + 6") x 2' in Width x 0.25' Average Depth x 7.48 Gallons / ft.³ = 18.7 Gallons ( WIT)

Calculating Your Basin Size

Your basin should be sized in relation to the amount of water in transit. To keep the pump from running dry and to compensate for the water lost due to evaporation, the basin will need to hold 1.5 times the water you have in transit. Using the formulas provided will ensure that your Basin Total ft.³ either equals or exceeds Minimum Required Basin Total ft.³

WIT x 1.5 = Total Minimum Gallons of Water Required in Basin

Total Minimum Gallons of Water Required in Basin x 7.48 Gallons per ft.³ = Minimum Required Basin Total ft.³

Length of Basin x Width of Basin x Depth of Basin = Basin Total ft.³

* We recommend using 2.5 times the WIT in the formulas above and to use Pond Free Blocks to account for all variables.

Example (refer to illustration):

WIT = 18.7 Gallons

18.7 Gallons (WIT) x 1.5 times WIT = 28.05 Minimum Gallons of Water Required in Basin

3' Length of Basin x 3' Width of Basin x 1.5' Depth of Basin = 13.5 Basin Total ft.³

Without Pond Free Blocks: 13.5 Basin Total ft.³ x 7.48 Gallons per ft.³ x 0.3 average gravel void space = 30.3 Gallons of water in void space

With Pond Free Blocks: 13.5 Basin Total ft.³ x 7.48 Gallons per ft.³ x 0.96 Pond Free Blocks void space = 96.9 Gallons of water in void space

Consider MatrixBlocks!

Pond Free Blocks will be used to build the basin area and will be included in the majority in our kits. Each block will hold 31.5 gallons. When calculating basin size, take 2.5 times your water in transit and dividing it by 31.5 will tell you how many blocks to use in your basin. While other options are available to use when building the water containment, we recommend using the Pond Free Blocks.

Pond Free Blocks work well in a variety of features. They are excellent when used in a bog filter and, most commonly, when building a basin for a Pond Free system. With 96% void space, the blocks can hold more water in a smaller space while still being able to support pavers, gravel, and other landscaping. Quickly lock the Pond Free Blocks panels in place and they are ready for installation. Pond Free Blocks save space and money by decreasing the volume of rocks needed and ensuring plenty of water to keep the pump from overheating.

 

Pond Free Calculator

Pond Calculations

*Max Length in Feet:
*Max Width in Feet:
*Average Depth in Feet:
Estimated Surface Area: Square Feet
Estimated Water Volume: Gallons
Liner size: x Feet
Max Koi Count:
Min. Pump Size: GPH
Total Acre Feet:

*Required

Compare + Shop Waterfall Kits

Enjoy the soothing sights and sounds of a gentle waterfall without the maintenance and care of a pond. Our exclusive complete waterfall kits are composed of hand-picked components from leading industry brands to deliver the best of each brand for an unbeatable value.

Use the side bar Filters to select your kit options.

Once you've narrowed down your options, select kits to compare. 

Choose the best kit for your unique project!

Use the tabs and Pond Free Calculator abovefor all the assistance you'll need to find the right kit for your project.

Show 15 products per page