5 Rules for Adding Pool Chemicals Safely

Add chemicals one at a time, never two at once Mixing chlorine and acid creates toxic chlorine gas. Even residue in a bucket can be dangerous.

Follow this order: alkalinity, pH, chlorine, shock, then algaecide Balancers come before sanitizers and oxidizers. Alkalinity and pH work together, so adjust them first.

Wait at least 30 minutes between each chemical This gives each chemical time to circulate and react before the next one is added.

Never add algaecide right after shock Chlorine breaks down algaecide. Wait until chlorine levels drop below 5 ppm before adding it.

Always add chemicals to water, not water to chemicals Pre-dissolve dry chemicals in a bucket of pool water, then pour around the perimeter. Never add them directly to the skimmer.