Pool owners will often undertreat their pools, and then have to resort to expensive treatments to correct algae infestations, cloudy water, or unsanitary conditions that result. Higher chlorine residuals are not harmful, as most pool owners are led to believe. Effective chlorination requires the addition of enough chlorine to do the immediate job of sanitizing and oxidizing, and then to provide enough residual to satisfy future demand. Gas chlorine provides effective chlorination. Of course, no water treatment is complete without adequate filtration, circulation, and maintenance.
Eye irritation is by far the most common complaint regarding pool chemistry.
Unfortunately, most pool owners mistakenly believe that too much chlorine is the problem and cut back on the addition of chlorine. These chloramines are formed when active chlorine bonds with nitrogenous products in your water. Unless more free chlorine is available to destroy the chloramines, they will not be removed from the water. Higher chlorine residuals are not cause for alarm. The use of gas chlorination in swimming pools dates back to the mid 1950's and was introduced by chemists and chemical engineers who sought to solve their own backyard pool problems.