Reverse osmosis (RO) is used to reduce [[Calcium Hardness]] (CH) and/or [[CYA]] in pool water.
...gh a special series of membranes designed to remove things such as CYA and CH from the water.
2 KB (374 words) - 18:55, 27 December 2023
===Calcium Hardness (CH)===
- Heaters that specifically call for a minimum CH level<br>
5 KB (914 words) - 19:18, 11 February 2024
Calcium hardness (CH) is the direct measure of the amount of calcium ions (Ca2+) in your pool wa
CH, along with [[pH]] and [[TA]], is one of the parameters needed to calculate
11 KB (1,762 words) - 04:05, 19 April 2024
You will get a roughly 6-7ppm rise in CH for every 10ppm FC added using cal hypo. Cal hypo also raises pH because it
...ness]](CH) buildup should be monitored over the long term. In time if the CH level is allowed to buildup it could cause scaling on the walls of a pool o
4 KB (672 words) - 01:35, 8 September 2023
...t get by with a slightly lower CH, but don’t go any lower than 100. If the CH gets low and you see foaming, it's time to add some.<ref>https://www.troubl
6 KB (990 words) - 12:21, 25 May 2020
...l owner may wish to replace the pool water with fresh water. Elevated CYA, CH, high ammonia, a complete algae swamp, maintenance requirements, seasonal c
...he time of year. For example pools in the southwest who typically see high CH levels every 18 mos or so ideally like to exchange water in the winter when
7 KB (1,230 words) - 12:47, 29 May 2024
...01/18/calcium-saturation-index-csi/ Calcium Scaling Index (CSI)] using pH, CH and TA to tell us how likely scale will form. A positive CSI above +0.6 ind
...the high 8's or 9. Water left still for a few months with high pH, TA and CH can form scale on the surfaces which will feel rough.
6 KB (937 words) - 20:42, 30 April 2024
*R-0011L CH Indicator - should be deep blue color; any other color indicates it is bad
2 KB (349 words) - 20:44, 23 May 2023
...test kit that gets pushed by many larger “pool stores”. It tests pH, TA, CH, CYA VERY well, but it’s shortfall is how it tests chlorine levels. The
...-2006 is a step up from the K-2005 test kit. It contains the same pH, TA, CH, and CYA tests just like in the K-2005, with the upgrade to the “FAS/DPD�
18 KB (2,918 words) - 23:33, 2 December 2023
*CH = Calcium Hardness, dissolved calcium.
**BLUE - CH indicator dye (e.g. Taylor R-0011) is hydroxynaphthol blue.
12 KB (1,991 words) - 12:27, 27 May 2024
*608 oz (38 lb) Calcium chloride anhydrous will raise the CH by 411 ppm.
*806 oz (50.3 pounds) of Calcium chloride dihydrate will raise the CH by 411 ppm.
13 KB (2,098 words) - 01:55, 6 August 2023
...he bottom of the pool. Flocculent does not get rid of live algae, or lower CH, or remove CYA from the water.
4 KB (794 words) - 15:19, 12 July 2023
...to 50 ppm or even a bit lower. If you do that, then you need to raise the CH level and pH target to keep the water CSI in balance for plaster pools.<ref
6 KB (970 words) - 18:37, 23 April 2024
...were balanced to the same parameters; Temp = 70°F, pH = 7.6, TA = 160 ppm, CH = 200 ppm. The tanks were capped to slow down carbon dioxide out-gassing. (
6 KB (1,050 words) - 20:04, 4 October 2021
*For every 10 ppm FC added by Cal-Hypo, it also increases Calcium Hardness (CH) by at least 7 ppm and increases TA by about 0.4 ppm.
...term CH level of 383 ppm, but higher chlorine usage would result in higher CH levels so use of Cal-Hypo is more manageable than stabilized chlorine (assu
32 KB (5,325 words) - 20:04, 4 October 2021
Realize that in Arizona and other areas that have high CH in the fill water, using accelerated evaporation to cool your pool water, a
7 KB (1,218 words) - 15:02, 2 July 2023
...Levels is designed to protect your pool surface as long as the pH, TA, and CH can be kept in recommended ranges.
9 KB (1,613 words) - 11:17, 23 April 2023
*For every 10 ppm FC added by Cal-Hypo, it also increases Calcium Hardness (CH) by 7 ppm.
...calcium to your water whoch can cause other unwanted problems as the pool CH rises. [[Calcium Hardness|Calcium]] is the same as [[CYA]], it does not go
19 KB (3,073 words) - 18:29, 19 April 2024
...evels] is designed to protect your pool surface as long as the pH, TA, and CH can be kept in those ranges.
9 KB (1,455 words) - 15:33, 7 October 2023
...e pool, it will raise your sulfate levels. If your pool tends to have high CH you could experience calcium sulfate scale formation when the SWG chlorinat
11 KB (1,838 words) - 19:42, 24 April 2024
