🧂→🧪 How Salt Becomes Chlorine in Your Pool Ever wonder how a saltwater pool actually stays clean? Your salt system uses a process called electrolysis to convert simple pool salt into chlorine gas—right inside the plumbing. Here's how it works: Salt is dissolved in your pool water (you won’t taste it—it’s much lower than seawater). The water flows through a salt cell, which has charged plates inside. Electrolysis happens: electricity breaks the salt (NaCl) into sodium and chlorine gas (Cl₂). Th