Useful Formulas

-         Do not exceed 10” of fish per 100 gallons of filtration.

•  Calculate your “effective” pond volume:

-         Average depth less than 2’ 6” add 25%.

-         Pond located in full sun add 25%.

 •  Size your pump to circulate your entire pond in 2 hours

    (filtration pump)

 •  Know your pond’s volume in gallons. 

   Length X width X depth X 7.5.  then add for “effective pond  

   volume” above when sizing your filtration but  

   not when adding chemicals.

 •  Size your waterfall pump:  a minimum of 100 gallons per  

    hour per 1” of weir width.