The Pond Pump and Liner Plan
A new garden pond worked from the numbers that matter: a liner sized on the deepest point and rounded up to a sheet you can buy, the gallons counted on fill day, and a pump read on its chart at your pond's head, with the pipe that keeps the power bill down
Our Filter Turnover Calculator gives the flow a pond needs, but a pump box quotes its flow with no lift and no pipe. Our Pond Volume Calculator wants the average depth while the Pond Liner Calculator wants the deepest point, and typed the wrong way round an example kidney pond reads 1,615.79 gallons where it holds 942.55, 71% more water than is there. The Pond Pump and Liner Plan carries the three tools through a build. In the worked example the liner comes to 20 x 16 ft and is bought as 20 x 20, because the nearest stock size leaves 6 inches at the long edges; the hose counts 915 gallons on fill day; and a pump sold as 700 GPH delivers 329.63 GPH through thin pipe, a 2.78 hour turnover where 2 was the plan. A wider pipe lets that same small pump meet the 457.5 GPH target for $96.80 a year less to run than the pump the thin pipe needs. Every figure is computed by the code behind our calculators, and every pond, pump curve and price is an example for you to replace. It adds the safety facts a build needs: RCD or GFCI protection and a qualified electrician for the pump, and children kept from the water with a grille, a locked fence or no pond yet. It covers no salt, medicine or water treatment, and gives no structural advice. Inside: seven steps, four printable working pages, friction and pond reference tables and a quickstart, plus a personalised sheet worked from the numbers you enter in our calculators.
What’s inside
- The Two Depths Rule: the deepest point for the liner, the average depth for the water
- The Round Up Rule: the liner with the overlap at both edges, rounded up to a stock sheet, and the dug hole taped before ordering
- The Fill Count Rule: the pond's real gallons from a timed hose or a water meter, and fish worked on that count
- The Delivered Flow Rule: a turnover target for koi, goldfish or plants, as flow delivered at your head
- The Lift Plus Friction Rule: total head from the lift, the pipe run and its elbows, for four pipe sizes
- The Curve Rule: each pump read on its chart at your head, and pipe and pump pairs priced by their yearly power bill
- The Safe Start Rule: RCD or GFCI protection, a qualified electrician, children and water, and a bucket test at the outlet
- Four printable working pages: hole and liner sheet, fill count sheet, head sheet, pump and power sheet
- A pipe friction table for six flows and five pipe sizes, six example ponds with liners and flows, and a units table
- A quickstart checklist and a personalised sheet worked from your own calculator inputs
Run one of the free calculators first and buy from that page, and this sheet is computed from your own figures. Buy from here and the pack still arrives complete — the sheet simply has no numbers of yours to work from yet.
14-day refund, no questions asked. If the pack is not what you needed, email support@graburl.com and we refund you in full — you do not have to justify it or delete the file. Full policy.
$15.00 including any taxes · PDF, 24 pages · instant download, link valid 7 days and 5 downloads.
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