Water Balance: Difference between revisions
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The contents in the sections below are attributed to multiple sources. While it's intended to be as accurate as possible, Fairway Farms Swim Club makes no guarantees of its accuracy. The content is to be used for reference purposes only. | The contents in the sections below are attributed to multiple sources. While it's intended to be as accurate as possible, Fairway Farms Swim Club makes no guarantees of its accuracy. The content is to be used for reference purposes only. | ||
Chemical quantities are based on a rounded figure of 200,000 gallons for the pool capacity (203,950 on the original drawings, not including volume within piping). | |||
== Overview == | == Overview == | ||
| Line 14: | Line 16: | ||
!Increase | !Increase | ||
!Decrease | !Decrease | ||
|Calcium Hardness | |Calcium Hardness | ||
|150 to 400 ppm | |150 to 400 ppm | ||
| Line 108: | Line 99: | ||
[https://en.wikipedia.org/wiki/PH pH] is the "potential of Hydrogen"; a scale specifying the acidity or basicity of a solution, measured on a scale from 0 to 14: | [https://en.wikipedia.org/wiki/PH pH] is the "potential of Hydrogen"; a scale specifying the acidity or basicity of a solution, measured on a scale from 0 to 14: | ||
{| class="wikitable" | |||
!Ideal Range | |||
|7.4 to 7.6 | |||
|- | |||
!To Increase | |||
|Add Soda Ash<br>(usually not necessary) | |||
|- | |||
!To Decrease | |||
|Add Hydrochloric (Muriatic) Acid<br>(should be automatically dispensed) | |||
|} | |||
=== Testing === | |||
pH is a colorimetric measurement that uses a color indicator to identify pH ranges. Most tests use phenol red, with a test range of 6.8 to 8.4. When testing pH, it is important to carefully understand and follow the directions provided with test kit. | |||
=== False Readings === | |||
Sometimes, high levels of chlorine will quickly convert phenol red into a new indicator that is dark purple when the pH is above 6.6. A common mistake would be to confuse the purple color for dark red and wrongly add acid to the pool. | |||
=== Background === | |||
* A pH of 7 is neutral. | * A pH of 7 is neutral. | ||
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The ideal range of pH is targeted to be 7.4 to 7.6. A common myth is that this is very close to the pH of the human eye, often cited as having a pH of 7.5. However, this [https://www.ncbi.nlm.nih.gov/pubmed/7469869 isn't quite the case]. | The ideal range of pH is targeted to be 7.4 to 7.6. A common myth is that this is very close to the pH of the human eye, often cited as having a pH of 7.5. However, this [https://www.ncbi.nlm.nih.gov/pubmed/7469869 isn't quite the case]. | ||
== Calcium Hardness == | == Calcium Hardness == | ||