What is the ideal total alkalinity?

80-120 ppm for chlorine hot tubs and pools, 80-100 ppm for bromine systems.

How much bicarb raises TA by 10 ppm?

Approximately 17 g per 1000 L of water.

How long until I can bathe?

Wait 4-6 hours with the pump running, then retest pH and TA before bathing.

Is this the same as kitchen baking soda?

Chemically identical. ClearSpa supplies a 99%+ pool-grade bicarbonate, which dissolves cleanly without anti-caking agents.

How long does a 5 kg tub last?

Around 100-200 typical doses for a 1500 L hot tub or 12 months of weekly maintenance for a 30 m3 pool.

Will it work in salt-water systems?

Yes. Salt chlorinators tend to push pH up, so you will use TA increaser less often than with tablets.

Why does TA buffer pH?

Bicarbonate accepts or donates protons depending on pH, so it absorbs the daily acid-base swings before they shift pH.

Does sodium bicarbonate raise pH?

Marginally. Each 100 g per 1000 L lifts pH by about 0.05 units toward 8.3 (its natural buffering point).

Does it raise total dissolved solids?

Yes. 100 g per 1000 L adds about 60 ppm TDS.

Why has TA spiked above 150 ppm?

Either overdosed or top-up water is high in carbonate. Lower with pH minus in 0.4-pH steps until TA drops into band.

Why is my pH rising even after dosing TA?

Bicarbonate slowly drives pH toward 8.3 if dosed heavily. Hold smaller, more frequent doses for smoother buffer.

Why is the water cloudy now?

Powder dosed neat plus high calcium hardness can precipitate calcium carbonate. Filter for 24 hours and add a clarifier.

TA increaser vs pH plus?

TA increaser (sodium bicarbonate) raises buffer with little pH change. pH plus (sodium carbonate) raises pH with little TA change.

TA increaser vs alkalinity-up tablets?

Both contain bicarbonate. Powder is faster to dissolve and easier to dose precisely than slow-release tablets.

Total Alkalinity Increaser Sodium Bicarbonate

Name: Total Alkalinity Increaser Sodium Bicarbonate
Brand: ClearSpa
SKU: wb-4
Availability: InStock
Rating: 5.0 (6 reviews)

Stabilise hot tub or pool water with pure sodium bicarbonate. Holds pH steady between 7.2 and 7.6 by lifting total alkalinity into the 80-120 ppm comfort band.

Raises total alkalinity by approximately 10 ppm per 17 g per 1000 L.
Acts as the pH buffer that stops daily drift.
Has minimal direct effect on pH at normal dosing.
Reduces sanitiser consumption by removing pH spikes.
Improves bather comfort and prevents eye stinging from soft water.