Total alkalinity buffers pH — keep it in the 60–180 ppm range (80–120 ppm is the sweet spot for most pools) and pH stops swinging every time it rains. Enter your pool’s gallons and your current alkalinity reading; the calculator will tell you the exact pounds of sodium bicarbonate (baking soda / alkalinity increaser) to add to hit your target. Free, no signup.
Don’t know your pool’s gallons? Rectangle ≈ length × width × avg-depth × 7.5; round ≈ π × radius² × avg-depth × 7.5; freeform is roughly 0.45 × length × width × avg-depth × 7.5.
R-0015 acid demand reagent drops
Enter your pool volume to see dosage recommendations.
