cya added with chlorine tablets

[diverman57]

is there a way to figure how much cya is added by using triclor pucks?

 

[gordiec]

You can use the pool calculator. Enter your pool volume at the top and then scroll down to the bottom of the page and use the section for calculating the effects of adding chemicals:
http://www.poolcalculator.com/

 

[JamesW]

Trichlor pucks are usually about 7 ounces each. Each puck adds the following amounts:

Pool volume......Cyanuric acid added...........Chlorine added
In gallons........ by (1) 3-inch tab (ppm)...... per tab (ppm)

10,000..............3.0................................4.8
15,000..............2.0................................3.2
20,000..............1.5................................2.4
25,000..............1.2................................1.9
30,000..............1.0................................1.6

 

[PaulR]

Or, trichlor adds 6ppm CYA for every 10ppm FC.
--paulr

 

[JamesW]

Or, trichlor adds 6ppm CYA for every 10ppm FC.
--paulr

That's a good rule if you are adding a dose of chlorine all at once, but most people don't think about ppm chlorine added when using tabs. They count the number of tabs used, and use tabs to maintain a certain level.

 

[PaulR]

Hm, true, just thought I'd point out the relationship. Not clear whether diverman57 is a regular tab user, or somebody like me using N tabs to get CYA where it wants to be. I've found asking the Pool Calculator to tell me how much CYA from 10 tabs is a good starting point.
--paulr