Pool chemicals need cold, dry, and separate storage.

Separate them, keep them dry, and keep them cool. That’s the whole game.

Pool chemicals are reactive. Chlorine tabs and shock, for example, can release chlorine gas if they get wet. Acid plus chlorine can create a toxic cloud. So store them in their original containers, with lids tight, and never store different types right next to each other — keep several feet of space or a solid barrier.

Choose a spot that’s cool (below 90°F, ideally), dry (no humidity), and out of direct sunlight. A plastic shed or a well-ventilated garage shelf is fine. Avoid damp basements and stack nothing heavy on top of chemical jugs. Also, store them away from gasoline, fertilizers, and anything metal (corrosion is real).

Follow the manufacturer’s dates — old chemicals lose potency and can be unpredictable. If a puck is crumbly or smells strong even when sealed, dispose of it properly.

Your lungs and pool pump will thank