Aquascape Pond Pumps

Pond Pump Selection Guide

Pumps are the heart of any water feature, continually circulating water and providing aeration to create the basis for a stable ecosystem. Proper pump sizing is critical to the health and function of the water feature and you want to be sure you’ve selected the correct pump. We’re here to help!

Aquascape provides our easy-to-use pond pump selection guide to help you choose the proper pump family for your water feature, whether it’s a pond, waterfall, or fountain.

Aquascape Pump Families

Aquascape pond pumps, submersible pond pumps, and fountain pumps are the preferred pond pump for hobbyists and professional pond installers alike. Learn more about our full line of pumps for ponds and water features and select the pond pump that’s right for you.

Selecting the Proper Pump Size

Once you’ve determined which Aquascape pump family best suits your water feature application, you’ll need to select the proper size pump.

Length in Feet
Width in Feet
Avg Depth in Feet
Width in Inches
Elevation in Feet (Static Head)
Pipe Length in Feet

Pond Volume

A basic pond pump will have the capability of turning the total volume of water over once per hour. Therefore, before choosing a pond pump, you need to know the number of gallons of water in your feature. You can find the volume of your pond in gallons with this useful equation:

(Length x Width x Average Depth x 7.48) x 0.8 = US Gallons*

*Length, Width and Depth are measured in feet

Pond Volume

A basic pond pump will have the capability of turning the total volume of water over once per hour. Therefore, before choosing a pond pump, you need to know the number of gallons of water in your feature. You can find the volume of your pond in gallons with this useful equation:

(Length x Width x Average Depth x 7.48) x 0.8 = US Gallons*

*Length, Width and Depth are measured in feet. We multiply by 0.8 to account for rocks in the pond.

Flow Rate

Most pond pumps are rated by the gallons of water they're able to pump per hour (GPH). As a general rule of thumb, a pump with a flow rate of 1500 GPH is needed for every foot of the length of the spillway (the weir, which is the horizontal width of the waterfall opening). So if your waterfall spillway is two feet wide, you'll need a pump with a flow rate of 3000 GPH.

Waterfall Width x 125 = Apprx. Flow Rate*

*Waterfall width measured in inches

Head Height

Head height, also known as total dynamic head, represents the height water needs to be lifted (static head) plus the friction experienced by the water as it runs through the pipes (dynamic head).

Dynamic head is the amount of resistance caused by the plumbing. Water velocity (flow rate), pipe diameter, length and pipe material all play a role in dynamic head. Additional resistance will also be caused by fittings such as elbows and valves. Since this equipment is typically buried in the ground, sometimes an estimation of dynamic head needs to be used.

The calculation below is a simple way to estimate the approximate head height.

Static Head in feet + (Pipe Length in feet x 0.1) = Apprx. Head Height*

*Static head: The height difference between the surface of the pond and the waterfall
Pipe length: We're calculating 1 ft head per 10 ft tubing
Fittings: additional fittings would add 1 ft of head each

The pond calculator is designed to help you find the pump you need for your project. Be advised that variables outside of this calculator, such as pipe diameter or number of elbows used, can influence proper pump selection. If your pond project exceeds the performance from a single pump, please contact Aquascape Customer Care for additional help.


Aquascape provides our easy-to-use pond pump selection guide to help you choose the proper pump family for your water feature, whether it's a pond, waterfall, or fountain.

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