Note: Don’t swim in a pool after adding sodium bisulphate for at least 4-6 hours. It can cause serious burns to the skin if it comes in direct contact. Never add more than the recommended amount of sodium bisulphate to your pool at one time. It can cause surface and plumbing damage. Always add sodium bisulphate to the water slowly.
So to raise your Total Alkalinity by 10, you need to add 176 grams of Sodium Bicarbonate per 10,000 Litres.
And to reduce your Total Alkalinity by 10, you need to add 221 grams of Sodium Bisulphate per 10,000 Litres.
1000 Grams = 1 Kilogram
How many litres is your pool volume: 20000 litres (5283.44 US Gallons)