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Ponds & Aquatic Plants

Increase in pond, increase in pump/filter?

19 years ago

My father-in-law had a 300 gal pond (6 ft by 7 ft) and decided he wanted to raise it up off the ground by 12 inches. This increase in depth has added an unknown (by us) amount of water to the pond, which now needs more pump power and filter power. How do we decide how many more gallons the pond contains (short of getting a water meter for an already filled pond) and how much stronger do the pump and filter need to be?

Thanks in advance for your help!

Melinda

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Comments (3)

bugsb
19 years ago
The formula is length times width times depth times 7.5 and that will give you the gallons. Hope this helps.

Here is a link that might be useful: My pond the way it was before the freeze.
melinda27858
Original Author
19 years ago
Okay, so that means that the pond is now about 550-600 gallons. What strength pump needs to be purchased? How much filter needed for the pond (only some goldfish kept in it)?
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donkeyden
19 years ago
The formula also requires the depth. If the dept was 2 foot it would be one figure and three another with the same length and width. it calls for the cubic volume times 7.5.

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