How to determine quantity of chlorine pucks required if out of town for a week?

CPM10V

Well-known member
Jun 12, 2019
54
Phoenix, AZ
Pool Size
25000
Surface
Plaster
Chlorine
Liquid Chlorine
As title says is there a calculator available to determine how many chlorine pucks are needed to keep chlorine level of pool safe without adding too much CYA if you can’t maintain pool for a week? I’m going to be out of town for a week & don’t have any way to add liquid chlorine while gone. Thanks!
 
Each 8 oz trichlor tablet will raise your FC by 2.3, CYA by 1.3, lower pH by 0.1, and add 1.8ppm of salt.

Assuming your pool needs 4ppm/day of FC then you probably need 10 tablets for a week.

What is your CYA?
 
In your area CYA 70-80 will give you less daily FC loss.

The 10 pucks will raise your CYA by 13.
 
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