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f i <br /> f Your Pool Cover and Water Chemistry <br /> To ensure you get the maximum service and enjoyment from your pool <br /> cover, we would like to share some pool chemistry tips that we have gath- <br /> t <br /> x ered in our many years of business. We feel confident that if these tips are <br /> followed, you will save a great deal of money by maximizing the life of your <br /> pool cover and minimizing your expense for pool chemicals. <br /> Pool cover failures caused by improper water balance and chemical <br /> damage, deterioration, premature aging, discoloration of the pool cover <br /> etc. are not covered by your warranty. <br /> • <br /> i • Obtain a good pool water test kit and use it frequently. <br /> i' <br /> Maintain good water balance (keeping the pH,alkalinity and <br /> calcium hardness at proper levels). When your water is prop- <br /> erly balanced it allows the sanitizing agents, such as chlorine, to <br /> t control bacteria and other contaminants at lower levels. The <br /> result is ideal pool water. Your local experienced pool profes- <br /> 'i with his expertise and the instructions of various chem- <br /> ical manufacturers, is a valuable resource in attaining this goal. <br /> ..kf w. ty The chemical balance of swimming pool water is a complex <br /> subject. Total alkalinity and calcium hardness, for example, will <br /> vary considerably from location to location depending on the <br /> , t^ area's water supply. Therefore, you should check with your pool <br /> builder or local professional in identifying what values are best <br /> �'•� for your area. We have found that the following water balance <br /> }. . data generally works well around the country. <br /> gd . . <br /> j • Parameter Recommended Range Test frequency <br /> _ - PH 7.2 to 7.6 Daily <br /> , , Total Alkalinity 80 to 120 ppm Weekly <br /> Calcium Hardness 150 to 250 ppm Monthly <br /> 7 � Free Chlorine 0.6 to 1.5 ppm Daily <br /> Salt 3,000 ppm Weekly <br /> 'ppm = parts per million <br /> ' ?, . ,,c • PH is the most important factor in the control water <br /> 2 s -* � '. chemistry. The pH is the measure of acidity and alkalinity of the <br /> a r water, with 7.0 being neutral. Never allow the pH to fall below <br /> ° E r + = 7.0 into the acidic range. An acidic level below 7.0 creates <br /> ei Y•{'.!'o complex chemical interactions which are very harmful to your <br /> �40 ` pool cover. Extreme or prolonged exposure of pH values below <br /> w ' <br /> 7.0 and/or above 7.8 can significantly cause premature aging to <br /> E...-(E., Ek )ti your pool cover. Some pH adjusters may create damaging levels <br /> i ' ^" ' ' of alkalinity (high pH) if they do not mix completely with the <br /> ??,,„ y�' . pool water before closing the pool cover. The same is true of <br /> 1 r•"� d chlorine shocks; some require up <br /> to 24 hours before a "swim ` <br /> h *�: <br /> safe" range can be reached. <br /> 18 POOL COVER SPECIALISTS®xmd <br />