Alphie's Calculator

1. Select Facility Pool

Current Free Chlorine (PPM) Target Free Chlorine (PPM) Chemical Type

ORP Reference: If your controller reads ORP, ensure it is within acceptable ranges. If ORP is low but PPM is high, check your Cyanuric Acid or pH!

Current Total Alkalinity (PPM) Target Total Alkalinity (PPM)

Rule of Thumb: Always fix Alkalinity BEFORE attempting to adjust pH. We use Sodium Bicarbonate (Baking Soda) to raise Alkalinity.

Current pH Target pH Chemical to Lower pH

Note on CO2: CO2 automatically lowers pH without adding total dissolved solids. If your CO2 is running but pH isn't dropping, check if the cylinder is empty or if Alkalinity is too high.