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How to Choose a Pond Pump
The first thing you need to know when choosing a pump for your pond is – how many gallons of water does your pond hold? Your pump should turn over the water in your pond once every hour. The height and width of your waterfall, along with the length of pipe from your pump to the waterfall, also has an impact on how many gallons per hour (gph) your pump needs to push to turn the water over. Follow our three steps below to help choose the right pond pump for your water feature.
STEP 1
STEP 1
Calculate Your Pump Requirements
Use our pond pump calculator to determine the best size pump for your pond.
Length in Feet
Width in Feet
Avg Depth in Feet
Width in Inches
Elevation in Feet
Pipe Length in Feet
Pipe Diameter
Confirm your Water Feature Type
What type of water feature do you have? Select where the pump will be used, either in a "Pond" or "Pondless" water feature.
Pond
Pondless
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 = Pond Volume*
*Length, Width and Depth are measured in feet. We multiply by 0.8 to account for rocks in the pond.
Stream Volume
Before choosing a pump for your Pondless Waterfall, it would help to know approximately how many gallons of water your basin needs to hold. To do that, we will need to determine how much water is in the stream. You can find the volume of your stream in gallons with this useful equation:
(Stream Length x Stream Width x (Average Stream Depth x 0.25) x 7.48 = Stream Volume*
*Length and Width are measured in feet. For the purposes of this calculator we are assuming an average depth of 1 inch.
Your pump needs to remain fully submerged while running and the stream is full. We recommend the basin is large enough to hold double the amount of water found in the stream.
Stream Volume x 2 = Gallons in Basin
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 125 gph is needed for every inch of your waterfall width. So if the widest point in the waterfall is two feet wide, you'll need a pump with a flow rate of 3000 gph. Higher flow rates can be used if you want to produce a stronger, more dramatic water flow.
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.
STEP 2
STEP 2
Choose Your Pump Location
Pond Pumps
For Use in Pond Skimmers
If your pond has a skimmer, you want to select a pump from this group. The mechanical skimmer protects the pump and helps to increase its lifespan. Aquascape offers two styles of in-skimmer pumps: solids-handling and energy-efficient pumps.
In-Pond Pumps
For Use Directly in the Pond
If your pond does not have a box-type skimmer, you want to select a pump from this category. Please note that these pumps are not made for use with Pondless® Waterfalls.
STEP 3
STEP 3
Choose Your Pump Model
After using the pump calculator, you should now know how many gallons per hour (gph) you need to pump. Use this information to select a pump model from either the solids-handling pumps or energy-efficient pumps below.
Low Maintenance,
Solids-Handling Pumps
For Use in Pond Skimmers
Solids-handling pumps are extremely durable and lower maintenance because they are designed to handle small debris such as mulch, twigs, and small pebbles, that could enter your pump.
SLD Adjustable Flow Pond Pumps
Available in three models with maximum flow rates of
2,000 – 9,000 gph
- Minimizes maintenance by passing solid debris through the pump with ease
- Adjustable flow and app-controlled options available
Low Maintenance,
Solids-Handling Pumps
For Use in Pond Skimmers
Solids-handling pumps are extremely durable and lower maintenance because they are designed to handle small debris such as mulch, twigs, and small pebbles, that could enter your pump.
PL and PN Pond Pumps
Available in five models with maximum flow rates of
3,000 – 10,000 gph
- Direct-drive motor technology
- Solids-handling capability
- Unmatched dependability
Energy-Efficient Pumps
For Use in Pond Skimmers
Energy-efficient pumps are designed to perform optimally while reducing monthly operating costs.
AquaSurge® Pond Pumps
Available in six models with maximum flow rates of
2,000 – 8,000 gph
- Reliable, energy-efficient, asynchronous motor design
- Can be positioned horizontally or vertically
- Adjustable flow and app-controlled options available
Energy-Efficient Pumps
For Use in Pond Skimmers
Energy-efficient pumps are designed to perform optimally while reducing monthly operating costs.
EcoWave® Pond Pumps
Available in four models with maximum flow rates of
2,000 – 5,000 gph
- Our most energy-efficient pump option
- Ideal for low flow and low-head applications
In-Pond Pumps
For Use Directly in the Pond
If your pond doesn’t have a skimmer to house a pump, then you want to choose an in-pond pump. These pumps include a pre-filter cage to prevent debris from clogging the motor.
AquaForce® Pond Pumps
Available in four models with maximum flow rates of
1,000 – 8,000 gph
- Adjustable flow, app-controlled options available
- Protective cage that handles solids up to one-quarter inch
In-Pond Pumps
For Use Directly in the Pond
If your pond doesn’t have a skimmer to house a pump, then you want to choose an in-pond pump. These pumps include a pre-filter cage to prevent debris from clogging the motor.
AquaJet® Pond Pumps
Available in three models for ponds ranging in volume
600 – 2,000 gallons
- Ideal for smaller ponds and includes three fountain head options, along with diverter for external filters, waterfalls, or spitters
- Adjustable height from 10 to 20 inches