Salt Water Pools: How much salt do I add to my pool? Do I need a Zinc Anode?

Posted on August 15, 2013 – 04:13 pm

Salt Water Pool:

How much salt do I need to add?

You only need to add salt to your pool or spa if your chlorinator control box indicates your levels are low or, obviously, you have completely (or significantly) drained your pool.

The salt level for a safe, chlorinated pool is about 2, 500 to 4, 000 PPM (parts per million). Most people can’t taste salt until the PPM is around 5, 000. So for most people, it’s not even noticeable.

Here is how to figure out how much salt you would need after just filling it with fresh water.

If you don’t already know, estimate how many gallons your pool holds.

The formula (using feet) is:

Average Depth x Length x Width x 7.5 = Gallons

The average depth = (depth at shallow end + depth at deep end) divided by 2


The pool is 50’ long and 20’ wide. The shallow end is 3’ and the deep end is 9’.
Average depth = (3’ + 9’) / 2 = 6’
6’ x 50’ x 20’ x 7.5 = 45, 000 gallons

If this is a new pool, you will need 50 lbs salt for every 2, 000 gallons to get about 4, 000 ppm, a good starting point. So for this example, you would need 1, 125 lbs of salt

For existing pools, the previous usage of chlorine bleach or tablets will have already created a level of salt in the water. Have the water tested and then add the appropriate amount to establish 4, 000 ppm.


Salt water

2008-09-15 23:19:32 by GimmeMocha

Just recently, I've noticed the emergence of salt water pools. There was one at the hotel (nothing fancy) where we stayed in Lincoln City. Also, the Courthouse Athletic club in Salem has one.
I think it would be best to call around to your local pools and ask where the closest salt water pool is. There must be something in Portland!
Good luck!

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"I personally went on salt over 30 years ago. I had one of the original systems because I'm a state-certified pool contractor," Chila said.

McGraw-Hill Professional The Ultimate Guide to Pool Maintenance, Third Edition
Book (McGraw-Hill Professional)
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Non Salt Water Softener; Get Your Best Non Salt Water Softener
Salt Water Systems
Goldline Hayward Goldline AQR AquaRite Electronic Salt Pool Chlorinator Control Box
Lawn & Patio (Goldline)
  • Control box for salt pool chlorinator
  • Extremely safe low-voltage electrical charge turns salt into sanitizing chlorine to be dispersed through the pool jets
  • Adjust your chlorine levels to pool demand for chlorine
  • Adjust chlorine output from 1 to 100 percent
Robelle Industries Aquachek White Salt Water Swimming Pool Test Strips
Lawn & Patio (Robelle Industries)
  • Includes water chemistry insert with directions
  • 10 Strips/Bottle
  • Tests for: Salt (as sodium chloride)
HM Digital HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy
Home Improvement (HM Digital)
  • The TDS-EZ Water Quality Tester is ideal for all basic water testing applications
  • This Tester is highly efficient and accurate due to its advanced microprocessor technology
  • Hold Function: Saves measurements for convenient reading and recording
  • Economy model that is ideal for end-users.
  • Highly efficient and accurate due to its advanced microprocessor technology.
  • Fun, translucent blue housing that's very strong and durable.
  • ncludes a TDS chart sticker on the back of the meter that explains TDS values
  • uto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries.

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