RECOMENDED SIZE OF POND PUMP IS DETERMINED BY:
1) Turn Of Pond Water
• For a pond with a pressurized filter, turn the water approximately once every two hours.
(Example 1800 Gallon Pond - Miinimum 900 GPH Pump)
• For Ponds with skimmers and falls and most other types of ponds, water should be turned approximatly once every hour: (Example: 1800 Gallon Pond - Minimum 1800 GPH Pump)
2) Height Water Must Be Pumped Above Pond Surface.
THE CHART ABOVE
SHOWS HOW GPH DECREASES
AS THE HEAD HEIGHT INCREASES
• Head Height is the term for the vertical height the pump raises water above the surface of the pond.
• All pumps have a maximum head height (see Head Height Demonstration below)
3) SELECTING CORRECT TUBING IS CRITICAL TO PUMP PERFORMANCE
CORRECT SIZE TUBING IS VERY IMPORTANT.
• Too small of tubing restricts water flow. The example below demonstrates the importance of tubing size;
The image above shows three separate containers. Each collected the discharge from a 700 GPH pump for 10 seconds. The only difference is the tubing size. Too small of tubing will restrict the flow of water dramatically.
Use the chart below as a guide to assist in selecting the suggested tubing for each pump size. It shows the maximum flow rate for each size of tubing.
The LENGTH of tubing is also an important factor when choosing a pump.
EVERY 10’ OF TUBING EQUALS SAME RESTRICTIONS AS 1’ OF LIFT