Water Balance - Revision history

Matt Parnell at 21:08, 8 June 2021

2021-06-08T21:08:26Z

@@ Line 16: / Line 16: @@
 !Increase
 !Decrease
 |Calcium Hardness
 |150 to 400 ppm
@@ Line 105: / 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:
 === Testing ===

Matt Parnell: /* pH */

2021-06-08T21:03:03Z

@@ Line 105: / Line 105: @@
 [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:
 * A pH of 7 is neutral.
@@ Line 118: / Line 128: @@
 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 ==

Matt Parnell: /* Overview */

2021-06-08T20:53:10Z

Overview

← Older revision		Revision as of 20:53, 8 June 2021
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	!Increase		!Increase
	!Decrease		!Decrease
	\|-
	~~\|Alkalinity~~
	~~\|80 to 120 ppm~~
	~~\|Add Sodium Bicarbonate (Baking Soda)~~
	~~\|Add Hydrochloric (Muriatic) Acid~~
	\|-		\|-
	\|pH		\|pH

Matt Parnell at 20:52, 8 June 2021

2021-06-08T20:52:22Z

← Older revision		Revision as of 20:52, 8 June 2021
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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 ==

Matt Parnell: /* Total Alkalinity */

2021-06-08T19:15:18Z

Total Alkalinity

← Older revision		Revision as of 19:15, 8 June 2021
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	\|-		\|-
	!To Decrease		!To Decrease
	\|Usually not ~~recommended~~; will decrease with addition of acid.		\|Usually not necessary; will decrease with the addition of acid.
	\|}		\|}

Matt Parnell: /* Total Alkalinity */

2021-06-08T19:15:00Z

Total Alkalinity

← Older revision		Revision as of 19:15, 8 June 2021
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	!To Increase		!To Increase
	\|<b>Add sodium bicarbonate (baking soda)</b><br>28 lbs for +10 ppm<br>50 lbs for +17.9 ppm<br>(10 ppm/1.4 lbs for 200,000 gallons)		\|<b>Add sodium bicarbonate (baking soda)</b><br>28 lbs for +10 ppm<br>50 lbs for +17.9 ppm<br>(10 ppm/1.4 lbs for 200,000 gallons)
			\|-
	!To Decrease		!To Decrease
	\|Usually not recommended; will decrease with addition of acid.		\|Usually not recommended; will decrease with addition of acid.

Matt Parnell: /* Total Alkalinity */

2021-06-08T19:14:51Z

Total Alkalinity

← Older revision		Revision as of 19:14, 8 June 2021
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	!To Increase		!To Increase
	\|<b>Add sodium bicarbonate (baking soda)</b><br>28 lbs for +10 ppm<br>50 lbs for +17.9 ppm<br>(10 ppm/1.4 lbs for 200,000 gallons)		\|<b>Add sodium bicarbonate (baking soda)</b><br>28 lbs for +10 ppm<br>50 lbs for +17.9 ppm<br>(10 ppm/1.4 lbs for 200,000 gallons)
			!To Decrease
			\|Usually not recommended; will decrease with addition of acid.
	\|}		\|}

Matt Parnell: /* Adjustment */

2021-06-08T19:13:15Z

Adjustment

← Older revision		Revision as of 19:13, 8 June 2021
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	Sodium bicarbonate can be purchased for about $40 from Aquatic Source in Brighton (plus delivery charge) or B&B Pools in Livonia.		Sodium bicarbonate can be purchased for about $40 from Aquatic Source in Brighton (plus delivery charge) or B&B Pools in Livonia.

			Re-test alkalinity after six hours.

	== pH ==		== pH ==

Matt Parnell at 19:12, 8 June 2021

2021-06-08T19:12:49Z

← Older revision		Revision as of 19:12, 8 June 2021
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	Total alkalinity is the measure of the water's ability to "buffer" from wide pH swings. A buffer is a chemical system that resists change when acids or bases are added to the water. In water with no buffer ability, pH can shift dramatically. This rapid fluctuation of pH is called pH bounce, and the result is a highly unbalanced water condition.		Total alkalinity is the measure of the water's ability to "buffer" from wide pH swings. A buffer is a chemical system that resists change when acids or bases are added to the water. In water with no buffer ability, pH can shift dramatically. This rapid fluctuation of pH is called pH bounce, and the result is a highly unbalanced water condition.

			{\| class="wikitable"
			!Ideal Range
			\|80 to 100 ppm
			\|-
			!To Increase
			\|<b>Add sodium bicarbonate (baking soda)</b><br>28 lbs for +10 ppm<br>50 lbs for +17.9 ppm<br>(10 ppm/1.4 lbs for 200,000 gallons)
			\|}

			Per PHTA, alkalinity should ideally be kept between 80 and 100 ppm when calcium hypochlorite is used as a sanitizer. Worst case, it must be no less than 60 and no greater than 180. More broadly speaking, a range from 80 to 120 is often cited as acceptable. The state and county do not appear to have a standard that supersedes this guideline.

	{\| class="wikitable"		{\| class="wikitable"
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	=== Adjustment ===		=== Adjustment ===

	~~Pending~~.		Pour bag(s) of sodium bicarbonate slowly into the surge tank. This should ideally be done late in the day to allow it to dissolve overnight. After pouring, the Chemtrol may briefly alarm due to the elevation of pH and TDS (conductivity) readings due to the spike in concentration within the filter system. The alarm should clear after several minutes.

			If possible, use the full bag to avoid keeping partial bags on-hand.

			Sodium bicarbonate can be purchased for about $40 from Aquatic Source in Brighton (plus delivery charge) or B&B Pools in Livonia.

	== pH ==		== pH ==

Matt Parnell: /* Total Alkalinity */

2021-06-08T16:48:52Z

Total Alkalinity

← Older revision		Revision as of 16:48, 8 June 2021
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	The most common problem in the total alkalinity test is caused by a high level of chlorine. When excessive chlorine is present in the sample, one of the two reagents used in the total alkalinity indicator will bleach out. When this happens, the endpoint changes from blue to yellow instead of green to red. To avoid this problem, repeat the test with an extra drop of the first reagent, thiosulfate. This should destroy the excess chlorine and solve the problem.		The most common problem in the total alkalinity test is caused by a high level of chlorine. When excessive chlorine is present in the sample, one of the two reagents used in the total alkalinity indicator will bleach out. When this happens, the endpoint changes from blue to yellow instead of green to red. To avoid this problem, repeat the test with an extra drop of the first reagent, thiosulfate. This should destroy the excess chlorine and solve the problem.

			=== Adjustment ===

			Pending.

	== pH ==		== pH ==