How to Add Baking Soda to a Pool

Intermediate 5 min 14 steps 9892 views Rating: 3.8/5 Published: 2026-05-21

Purchase a titration test kit.. Take a water sample from your pool at elbow depth.. Add 2 drops of the sodium thiosulfate.

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Steps

1

Purchase a titration test kit.

Step 1

Purchase a titration test kit.

2

Take a water sample from your pool at elbow depth.

Step 2

Take a water sample from your pool at elbow depth.

3

Add 2 drops of the sodium thiosulfate.

Step 3

Add 2 drops of the sodium thiosulfate.

4

Put in 5 drops of the alkalinity indicator and swirl the tube.

Step 4

Put in 5 drops of the alkalinity indicator and swirl the tube.

5

Add the sulfuric acid reagent 1 drop at a time until the liquid turns red.

Step 5

Add the sulfuric acid reagent 1 drop at a time until the liquid turns red.

6

Multiply the number of drops by 10.

Step 6

Multiply the number of drops by 10.

7

Find the length and width of your pool to find the surface area.

Step 7

Find the length and width of your pool to find the surface area.

8

Average the depth of the shallow end and the deep end.

Step 8

Average the depth of the shallow end and the deep end.

9

Multiply the surface area and depth to find the volume.

Step 9

Multiply the surface area and depth to find the volume.

10

Multiply the volume by 7.5 for cubic feet or by 1,000 for cubic meters.

Step 10

Multiply the volume by 7.5 for cubic feet or by 1,000 for cubic meters.

11

Add 1.25 lb (570 g) of baking soda per 10,000 US gal (38,000 L) of water.

Step 11

Add 1.25 lb (570 g) of baking soda per 10,000 US gal (38,000 L) of water.

12

Use only 2 pounds (910 g) of baking soda per day.

Step 12

Use only 2 pounds (910 g) of baking soda per day.

13

Pour the baking soda into the deep end of the pool.

Step 13

Pour the baking soda into the deep end of the pool.

14

Retest the water after 10 hours and make further adjustments if necessary.

Step 14

Retest the water after 10 hours and make further adjustments if necessary.

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