WLS_Catalog_2008_Par.. - Water Landscape Supply

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IMPORTANCE OF POND GALLONS
This information helps with:
• Sizing pump for pond
• Sizing filter for pond
• Fish numbers
• Adding pond treatments
GALLONS PER CUBIC FOOT
1 ft
1 ft
One Cubic Foot of Water = 7.48 Gallons
(7.5 Often Used)
ESTIMATE GALLONS IN POND
Volume for Average Pond:
WIDTH x LENGTH x DEPTH = Cubic Feet
Cubic Feet x 7.5 = GALLONS
EX: 10ft x 12ft x 2ft = 240 Cu. Ft.
240 (cubic ft) x 7.5 gal = 1800 gallons
Volume for Circular Pond:
RAD x RAD x 3.14 x DEPTH = Cubic Feet
Cubic Feet x 7.5 = GALLONS
Most Accurate Method:
WATER METER (See page 7)
CHART TO SELECT TUBING
Max Flow Tubing
(GPH) (Inside Dia.)
300 1/2”
720 3/4”
1200 1”
2000 1 1/4”
3000 1 1/2”
1 ft
Max Flow Tubing
(GPH) (Inside Dia.)
4800 2”
6000 2 1/2”
9000 3”
12000 4”
PUMP TIPS
SIZING PUMP TO POND
BEST: Turn water in pond ONCE per Hour
(MINIMUM: Turn water every two hours)
Example: 2500 GALLON POND
Pump needs to perform at 2500 GPH
after considering length of tubing and
pumping height. (See Below)
PUMP SIZING EXAMPLE
• Volume of pond • Total length of tubing
• Number of 90º elbows • Vertical lift
TOTAL
DYNAMIC HEAD
(TDH)
6’ Lift 6’
50’ Tubing 5’
1 90º Elbow 1’
12’
RULE OF THUMB
Every 10’ Tubing
equals 1’ Lift
AFFECTED BY GRAVITY
140 GPH at 1’
Strongest Flow
50’ of Tubing
at 2’
Reduced Flow
at 4’
More Reduced
AFFECTED BY FRICTION
90º Elbow
at 6’
Max. Head
WATER IS HEAVY: EACH GALLON WEIGHS OVER 8 lbs!
6’
2500 Gallons
Pump should produce 2500 GPH at 12’ of Head.
3/8” 1/2” 3/4”
HEAD HEIGHT
This image shows 3 separate
containers. Each collected
the discharge from a 700 GPH
pump for 10 seconds. Tubing
size was the only difference.
Too small of tubing may restrict
flow of water dramatically.
PUMP TIPS