Pool math says add 50 lbs of calcium hardness increaser? Leslie’s has me shooting for less…??

Plaster pools with liquid chlorine​

Ideal Levels​

Free Chlorine: Maintaining an appropriate Free Chlorine level is the most important part of keeping your water in balance. It is important that you do not allow FC to get too low, or you run the risk of getting algae. The level of FC you need to maintain depends on your CYA level and how much you use the pool. See the FC/CYA Chart.
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pH​

Acceptable Minimum: 7.2​

Ideal: 7.6-7.8​

Acceptable Maximum: 8.0​

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Total Alkalinity​

Acceptable Minimum: 50-60​

Ideal: 60-80​

Acceptable Maximum: 80-90​

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Calcium​

Acceptable Minimum: 250-350​

Ideal: 350-550​

Acceptable Maximum: 550-650​

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Cyanuric Acid​

Acceptable Minimum: 30-40​

Ideal: 40-50​

Acceptable Maximum: 50-60​

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High Chlorine Loss​

Pool owners who use liquid chlorine under some conditions may notice a large chlorine loss on a day to day basis. It is very common for a manually dosed pool to lose 2-4ppm Chlorine daily however some users may experience a larger drop, especially in areas of a high UV index. To help combat this issue users may consider maintaining a slightly higher than recommended CYA level such as maybe a 60ppm level to help protect the chlorine.

High Calcium Levels​

High Calcium levels in a plaster pool can easily create scale on the walls of the pool. In cases where calcium levels cannot be kept within TFP’s Ideal Levels a homeowner may need to use more advanced methods of pool care. Users with high Calcium Levels should read more about CSI to assist with their pool care.

Maintaining a Pool With Cold Water​

Users maintaining their pools with very cold water may find their CSI out of balance. To help combat this issue it’s suggested they allow their pH to increase towards 7.8 to 8.0 to help reduce the risk of etching their pools surface.


 
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