Save Money By Running 2 Pond Pumps. Free Calculator

Download Tony Roocroft's Pond Calculator series (12 of them)

calculators Run 2 Pond Pumps & Save More Money

Basic Instructions On The Spreadsheet

Most fish ponds have a waterfall and need a biofilter. It is normally the case that the basis upon which a pump is specified in this kind of situation is on the needs of the waterfall and not the biofilter. Generally the flow down a waterfall is more than that required by a biofilter. By understanding this it is possible to save money. A biofilter needs water 24 hours per day but a waterfall can be closed own whenever it suits the pond keeper. Hence a small pump cam be used 24 hours per day and the larger waterfall pump as many hours as you choose.  ...  calculators Run 2 Pond Pumps & Save More Money

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Tip when you download the Excel file ...

Use right click then select "Save Target As ..." to save the file on your own hard drive. All the calculators are interactive so I suggest you save the master copy just in case you make an incorrect change.

calculators Run 2 Pond Pumps & Save More Money

How To Convert Different Measurement Units

• To convert gallons to litres multiply by 4.54

• To convert gallons to US gallons multiply by 1.2

• To convert US gallons to litres multiply by 3.78

• To convert cu.feet to gallons multiply by 6.23

• To convert cu.feet to US gallons multiply by 7.48

• To convert inches to cm multiply by 2.54

• To convert feet to metres multiply by 0.305

• To convert pounds to kilograms multiply by 2.2

• To convert sq. feet to sq. Metres multiply by 0.093

• To convert cu metres to litres multiply by 1000

Of course to convert in the other direction you divide by the factor. For example to convert litres to gallons you would divide by 4.54

Importance of PIPE DIAMETER and PIPE LENGTH for a pond ... Hopefully you have decided to download the free calculator from Free pond calculator page By inserting different values for length and diameter you will see amazing impacts upon pump specification. You might find it difficult to believe but using small diameter pipes (especially long lengths) can reduce your pump flow to a trickle. Pipe diameter has a bigger impact than pipe length in most cases. Always use the biggest diameter pipe you can and always have the shortest length. Pumps and pumping systems are the source of live-giving oxygen to your fish and plants as well as your biofilter's bacteria.