Pool pH Increaser Calculator Australia: How Much Soda Ash
Work out how much soda ash (pH increaser) to add, then confirm with the free calculator for your exact pool volume.
Why Raise Pool pH?
Low pH (below 7.2) causes several problems:
- Eye and skin irritation
- Equipment corrosion
- Etching of pool surfaces
- Reduced sanitization effectiveness
Ideal pH range is 7.2-7.6. Use PoolCalculator.com.au to check if your pH needs adjustment.
Step 1: Test Current pH Level
Use a pool test kit or test strips to measure current pH. Read our guide on how to read test strips.
Ideal pH: 7.2-7.6
Action needed if: pH is below 7.2
Step 2: Soda Ash Dose Chart
Use this chart as a starting point, then confirm with PoolCalculator.com.au:
| Pool volume | Soda ash to raise pH by ~0.1 |
|---|---|
| 30,000 L | ~40 g |
| 50,000 L | ~65 g |
| 75,000 L | ~100 g |
| 100,000 L | ~130 g |
If total alkalinity is also low, raise TA with bicarb first, then fine-tune pH.
Step 3: Pre-dissolve Soda Ash
Pre-dissolve soda ash in a bucket of pool water before adding to pool. This prevents cloudiness and ensures even distribution.
Step 4: Add to Pool
- Turn on pool pump - Ensure circulation is running
- Pour slowly - Add dissolved soda ash to deep end
- Walk around perimeter - Distribute evenly while pouring
- Never mix chemicals - Add separately from other chemicals
What Causes Low pH?
Common Causes:
- Acid rain
- Certain chlorine tablets
- High bather load
- Low Total Alkalinity
- Adding too much acid
Prevention:
- Maintain proper TA (80-120 ppm)
- Test pH weekly
- Balance chemistry regularly
- Use stabilized chlorine
Related dosing tools
Calculate Your Pool pH Adjustment
Use our free calculator to get exact dosage recommendations for your pool.
Use Pool Calculator →Recommended pH Raising Products
Get the products you need to safely raise your pool pH. These soda ash and pH increaser products are available on Amazon Australia and will help you bring your pH back into the ideal 7.2-7.6 range.
Recommended Products
Products to help fix your pool issues and get back to clear water faster.
HTH Swimming Pool Care pH Up 1.8kg
Raises pH levels quickly and effectively. Swimming pool chemical.
$28.61
Amazon paid link. Confirm current price on Amazon.
Clorox Pool Alkalinity Increaser 12 lb
Raises total alkalinity. Prevents pH bounce. Protects equipment.
$73.52
Amazon paid link. Confirm current price on Amazon.
Soda Ash 1 Pound for Pool pH Adjustment
Pure soda ash for pool pH adjustment. Raises pH levels effectively. Easy to use.
$28.23
Amazon paid link. Confirm current price on Amazon.
Premium Pool pH Increaser Alkalinity Increaser for Swimming Pools
Premium pool pH and alkalinity increaser. Professional grade. Safe for all pool types.
$64.47
Amazon paid link. Confirm current price on Amazon.
AGUALEVE pH Plus Granules 1kg
Soda ash granules that raise pool and spa pH. Suitable for all pool types.
$61.67
Amazon paid link. Confirm current price on Amazon.
BAYROL Mini Pool & Spa pH Lifter 1kg
pH increaser granules with measuring spoon. Ideal for small pools and spas.
$40.81
Amazon paid link. Confirm current price on Amazon.
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