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18 Cards in this Set
- Front
- Back
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lowers the pH |
muriatic acid
sodium bisulfate |
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high pH causes |
scaling water |
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low pH causes |
Corrosive water |
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to raise pH |
soda ash sodium bicarbonate |
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to raise alkalinity |
sodium bicarbonate (baking soda) |
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how to calculate swimming pool volume |
length x width x avg. depth x 7.5 |
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turnover rate calculation |
pool volume/flow/60 spa volume/30 mins |
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high rate sand FMR |
5-20 gpm/ft2 |
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Cartridge FMR |
0.375 gpm/ft2 |
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DE FMR |
2 gpm/ft2 |
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Rapid Rate FMR |
3 gpm/ft2 |
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chemical adjustment calculation |
volume x 10,000 x ppm adjustment x chemical (/16 for lbs, /128 for gallons) |
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what percentage of sodium hypochlorite (liquid) is available chlorine? |
10% |
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what percentage of calcium hypochlorite (solid) is available chlorine? |
70% |
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what percentage of chlorine gas is available chlorine? |
100% |
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what percentage of trichlor is available chlorine? |
90% |
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what percentage of dichlor is available chlorine? |
60% |
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user load calculation |
surface area / 10(ft2/user) |
