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POND CALCULATION BASICS:
0.1% = 1 ppt = 1 gm of salt in every 1Litre of water
1 kg = 1,000 gram
1 Pound (lb) = 0.454 Kilogram(kg)
1 gallon (US) = 3.785 L
1 gallon (UK) = 4.546 L
What is the amount of salt to add into the pond after a reading is
recorded?
Here is an example if the target value of salt level in your pond
water is to be 0.25% or 2.5ppt, below are the steps for adjustments:
1. Take a measurement of the pond water with the ,
say an example reading of 0.05% or 0.5ppt shows on the meter,
then you need to subtract the target value from the displayed
value on the meter:
0.25 % - 0.05 % = 0.2 % (2.5ppt - 0.5ppt = 2ppt)
2. The result shows that an additional of 2 grams of salt is required
for every litre of water (2ppt).
3. Calculate and find out the total volume of the pond water.
Example: 1,500 litre or 396 US gallons or 495 imperial gallons.
4. Multiply the total volume by 2 ppt then divide by the factor in
brackets ( ) corresponding to its volumetric units will give the
required salt to add in kilograms.
Pond volume multiply by ppt divide by (factor) = weight to add
1,500 litre x 2.0 ppt / (1,000) = 3 Kg (6.6 lb)
396 US gallons x 2.0 ppt / (264) = 3 Kg
495 imperial gallons x 2.0 ppt / (330) = 3 Kg
5. Dissolve 3 kilograms of salt in a bucket and pour around the pool
in small portions over several intervals. Wait for several hours
before making another measurement as it will take some time
for salt to circulate evenly throughout the entire pond.
6. Repeat step 1 to 5 if further adjustment is needed.
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