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| Pressure Filter When water passes through a pressure filter you can expect a 15% flow reduction. |
+ 15% |
| Gravity Filter | + 0 |
Putting it all together - effective volume examples
Example 1
If you have a 6,000 litre pond, your base volume is 3000 litres
the pond is 60cm deep and exposed to full sunshine in Southern NSW.
Your pump and/or pond filtration equipment would need to be increased
by 65 % (25% pond depth + 25% sun per day + 15% climate). You would
therefore base your selection on a pond volume of 4,950 litres.
| Example 1 | litres | |
| Actual Pond Volume | 6,000 | |
| Divide by 2 to give base volume | 3,000 | |
| Additions | 25% pond depth (25% of 3,000) |
750 750 450 |
| Total Effective Volume (to base pump/volume decision on) | 4,950 | |
Example 2
f you have a 9,000 litre pond, your base volume is 4,500 litres the pond is 35cm deep, located in full sunshine with "a light stocking of fish" and you live in a Tasmania. Your pump and/or pond filtration equipment would need to be increased by 125% (50% pond depth + 25% sun per day + 50% light fish + 0% climate) You would therefore base your selection on a pond volume of 10,125 litres.
| Example 2 | litres | |
| Actual Pond Volume | 9,000 | |
| Divide by 2 to give base volume | 4,500 | |
| Additions | 50% pond depth (50% of 4,500) |
2,250 1,125 2,250 0 |
| Total Effective Volume (to base pump/volume decision on) | 10,1250 | |
Progress
Actual
Pond Volume
Effective
Pond Volume
Maximum pumping
height
Waterfalls
& streams, tube friction loss
The
weir rate for waterfalls and streams
Filter (if
being used) see 'Filters' below
Power consumption
Maximum pumping height
Calculate the Maximum pumping height (head height) >> NEXT >>
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