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POND MAINTENANCE
Email #1

Do you REALLY know how much water is in your pond?

The key to excellent pond maintenance is understanding everything about the makeup of your pond, and that starts with having an accurate measurement of the volume of water your pond contains. (The smaller your pond, the more important the accuracy of your measurement is!)

If you don't know how much water your pond contains, how do you know how many fish you can safely stock OR how to treat your pond with a product like Nualgi?

Getting an accurate measurement of water volume is also essential for testing and calculating proper filtration/circulation, but it isn't always that easy!

Common Measurement Mistakes:
  • Not factoring in displacement for everything added to the pond other than water. 
    • Liners, large rocks, plants and even fish that you add to the pond all displace a considerable amount of water.
  • Not factoring in added capacity from filtration system & plumbing.
    • Drum filters & similar systems can easily hold an additional 50-100 gallons of water depending on the length of plumbing.
  • Not measuring correctly in the first place
    • If you did not buy a preformed pond or have an irregular shape, measuring the volume of your pond can be quite difficult.
How to Measure Pond Volume:
The formula used to calculate the volume of water depends on the shape of your pond.  Use this table as a guide to determine the inputs you need to use our pond size calculator.
 
Square/Rectangle Circular / Oval
What you'll need:
Rope/Twine
Electrical Tape
Metal/Wooden Stake
Weight
To start:
Tie one end of the rope to the stake and then secure the stake into the ground at the corner of the longest side of your pond.
To start:
Tie one end of the rope to the stake and then secure the stake into the ground at the edge of  your pond.
 
To get length & width:
Walk the side of the pond while holding the rope and then use a piece of electrical tape to mark off the distance to the end. Repeat for shorter side.



 
To get diameter:
Walk to the opposite side of your pond while holding the rope and then use a piece of electrical tape to mark the distance.

*
For oval or irregularly shaped ponds, take measurements from multiple locations and average them together. 
To get average depth:
Tie a weight to the end of your rope and drop it to the bottom and then pull the rope taut before marking the rope. Repeat in at least 3 places and average the results.

**
For large ponds we recommend taking measurements from a boat.
Now you are ready to calculate volume!
Use our Pond Volume Calculator
Calculate Your Pond Volume
***If you have a VERY irregularly shaped OR large pond, we recommend this guide from ACES.edu
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Pond of the Week

“Works great in all 3 of our ponds. One pond is almost 5 feet deep and the water is crystal clear. It took 3 weeks to clear. No more UV lights, saving money on replacement bulbs and electricity! This product is amazing!”
- Woody S.

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