What is the best alkalinity booster for pool?

The best alkalinity booster for pools is sodium bicarbonate, commonly known as baking soda. It effectively raises alkalinity levels, helping to stabilize pH and prevent fluctuations. Typically, adding 1.5 pounds of baking soda per 10,000 gallons of water will increase alkalinity by about 10 parts per million (ppm). Always test your water after adding any chemicals to ensure optimal balance.