Help with appropriate shock for vinyl in-ground

[jeepers]

In a 25K gallon pool, each 2 gallons of 6% bleach will raise your FC by 5 ppm, so you can use that as a guide. As to how high your chlorine needs to go, that will depend on your CYA level. If you can see the blue links at the bottom of Watermom's sig, click on the "best guess chlorine" table to tell you how high your Cl needs to go, based on your CYA level. You can absolutely shock with bleach and still use your tabs in the floater, IF your CYA level is not too high--most folks keep it around the 40 ppm range.

Janet

Thanks, Janet.

Here are my numbers from 6/24:

FC 1.5
TC 1.5
CC 0
pH 7.7
Hardness 230
Alk 83
CYA 25
Copper 0.1
Iron 0

I brought the ALK up slightly after this test. I use 3" tabs in a floater and shock every 7-10 days with Calcium Hypochlorite.

I'll review the Best Guess chart again this evening. I looked at it briefly at work today but wasn't quite clear on how to read it so I'll see if it makes more sense now.

Jim