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Gallons of Water and Pumps |
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Use this chart to figure how many effective gallons of water you have in your pond. The effective gallons of water will tell you what size pump you will need. |
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Number of Gallons of physical water in a pond equals:
Length x Width x Depth x 7.48 Gallons per square foot
Example: 8’ x 10’ x 2’ x 7.48 = 1196.8 gallons 160 sq. ft. x 7.48 = 1196.8 gallons
The presence of the following factors will increase effective water volume by 25% each. FISH- Increase effective water volume by 25%. PLANTS- Increase effective water volume by 25%. WATERFALLS/SPITTERS- Increase effective water volume by 25%. SHALLOW WATER DEPTH (< 2’ 6”)- Increase effective water volume by 25%. FULL SUNLIGHT- Increase effective water volume by 25%. |
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LENGTH of Pond |
WIDTH of Pond |
DEPTH of Pond |
PHYSICAL GALLONS WATER |
EFFECTIVE GALLONS OF WATER |
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WITH PLANTS OR FISH |
WITH FISH AND PLANTS |
WITH SPITTERS, WATERFALLS, PLANTS & FISH |
SHALLOW WATER WITH FALLS PLANTS & FISH |
FULL SUN W/FALLS, PLANTS & FISH |
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8 |
10 |
1.5 |
898 |
1122 |
1346 |
1571 |
1795 |
1795 |
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8 |
10 |
2 |
1197 |
1496 |
1795 |
2094 |
2394 |
2394 |
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8 |
10 |
3 |
1795 |
2244 |
2693 |
3142 |
3590 |
3590 |
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10 |
10 |
1.5 |
1122 |
1403 |
1683 |
1964 |
2244 |
2244 |
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10 |
10 |
2 |
1496 |
1870 |
2244 |
2618 |
2992 |
2992 |
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10 |
10 |
3 |
2244 |
2805 |
3366 |
3927 |
4488 |
4488 |
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10 |
15 |
1.5 |
1683 |
2104 |
2525 |
2945 |
3366 |
3366 |
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10 |
15 |
2 |
2244 |
2805 |
3366 |
3927 |
4488 |
4488 |
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10 |
15 |
3 |
3366 |
4208 |
5049 |
5891 |
6732 |
6732 |
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10 |
20 |
1.5 |
2244 |
2805 |
3366 |
3927 |
4488 |
4488 |
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10 |
20 |
2 |
2992 |
3740 |
4488 |
5236 |
5984 |
5984 |
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10 |
20 |
3 |
4488 |
5610 |
6732 |
7854 |
8976 |
8976 |
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15 |
15 |
1.5 |
2525 |
3156 |
3787 |
4418 |
5049 |
5049 |
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15 |
15 |
2 |
3366 |
4208 |
5049 |
5891 |
6732 |
6732 |
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15 |
15 |
3 |
5049 |
6311 |
7574 |
8836 |
10098 |
10098 |
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20 |
20 |
1.5 |
4488 |
5610 |
6732 |
7854 |
8976 |
8976 |
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20 |
20 |
2 |
5984 |
7480 |
8976 |
10472 |
11968 |
11968 |
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20 |
20 |
3 |
8976 |
11220 |
13464 |
15708 |
17952 |
17952 |
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A RULE OF THUMB IS THAT THE EFFECTIVE AMOUNT OF WATER MUST BE TURNED EVERY TWO HOURS |
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EFFECTIVE FLOW PER HOUR |
X (2) HOURS |
RECOMMENDED PUMP SIZE |
HOSE SIZE |
FILTER RECOMMENDED |
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200 GALLONS |
400 GALLONS |
NPU 200 |
1/2 " |
BIOFORCE 250 |
BIOFORCE 250 UVC |
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350 GALLONS |
700 GALLONS |
NPU 350 |
3/4 " |
BIOFORCE 500 |
BIOFORCE 500 UVC |
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500 GALLONS |
1000 GALLONS |
NPU 500 |
3/4 " |
BIOFORCE 500 |
BIOFORCE 500 UVC |
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750 GALLONS |
1500 GALLONS |
NPU 750 |
3/4 " |
BIOFORCE 1000 |
BIOFORCE 1000 UVC |
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1000 GALLONS |
2000 GALLONS |
NPU 1000 |
3/4 " |
BIOFORCE 1000 |
BIOFORCE 1000 UVC |
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1250 GALLONS |
2500 GALLONS |
NPU 1250 |
1 " |
BIOFORCE 1000/2000 |
BIOF. 1000/2000 UVC |
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1800 GALLONS |
3600 GALLONS |
NPU 1800 |
1 " |
BIOFORCE 2000 |
BIOFORCE 2000 UVC |
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2000 GALLONS |
4000 GALLONS |
NPU 2000 |
1 1/4 " |
BIOFORCE 2000 |
BIOFORCE 2000 UVC |
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3000 GALLONS |
6000 GALLONS |
NPU 3000 OR EBARA 3000 |
1 1/4 " |
SKIMMER SYSTEM W/STERILIZER |
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4000 GALLONS |
8000 GALLONS |
NPU 4000 OR EBARA 3000 |
1 1/4 " |
SKIMMER SYSTEM W/STERILIZER |
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5000 GALLONS |
10000 GALLONS |
NPU 5000 |
1 1/4 " |
SKIMMER SYSTEM W/STERILIZER |
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