Pool chemical problems

Pool chemicals can react in different ways when combined with certain other additives or environmental conditions. Knowing what to look for as well as what to add before situations become problems can make pool ownership much more enjoyable.

Metallic algaecides can be highly corrosive if not managed with other chemicals that remove the copper after the algae has been killed. Other types of chemicals, such as the muriatic acid sometimes used to manage pH, need to be stored and handled with caution because of their corrosive potential.

Calcium and magnesium are contained in many types of pool chemicals, and contribute to the overall hardness of the water. Hardness should be between 200 and 400 parts per million; any more than that will result in water that will irritate skin and eyes as well as develop scale. If this occurs, the pool will need to be drained and scrubbed.

Some pool chemicals such as sodium bicarbonate, metallic algaecides and ammonia-based solutions have the potential to combust if stored improperly. They should always be stored in ventilated areas to keep pressure from building up inside and releasing toxic fumes or starting a fire.

Many pool chemicals can also be dangerous when inhaled or spilled on skin. Sweat or saliva can be enough to start a dangerous chemical reaction; compounds such as muriatic acid should only be handed when wearing protective clothing.