Baking Soda & Alkalinity Increasers
Baking soda (sodium bicarbonate) is a common alkalinity increaser used to raise total alkalinity in pool water. It also has a mild effect on pH, helping to stabilize your overall water balance and prevent sudden fluctuations.
Why It Matters
Low total alkalinity can cause your pH to swing up and down, leading to cloudy water, corrosion, and sanitizer inefficiency. By maintaining proper alkalinity, you create a buffer that helps keep pH steady and your pool chemistry easier to manage.
Recommended Levels
To maintain balanced water:
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Total Alkalinity: 80 – 120 ppm
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(For saltwater pools: aim closer to 80 ppm)
If levels fall below this range, you may notice pH instability, staining, or etching on pool surfaces.
Types of Alkalinity Increasers
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Sodium Bicarbonate (Baking Soda) – The most commonly used and gentle alkalinity increaser.
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Pre-measured Alkalinity Increasers – Packaged products designed specifically for pool use with clear dosage instructions.
Baking soda is often a cost-effective and reliable option for both above-ground and in-ground pools.
Tips for Raising Alkalinity
Broadcast baking soda or your chosen product across the surface of the pool with the pump running. Avoid adding too much at once—test water after each dose and allow circulation before retesting.
Takeaways
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Alkalinity helps keep your pH stable and your water balanced.
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Baking soda is the go-to option for safely raising alkalinity.
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Test weekly and adjust gradually to stay within the ideal range.