Chlorine won't register on TF-100 test kit

Mjreedy

New member
Sep 4, 2023
4
Grass Valley , Ca
Pool Size
9906
Surface
Vinyl
Chlorine
Liquid Chlorine
Drained pool due to algae bloom, Shocked pool and purchased new TF-100 test kit. Added 1 gallon chlorine and it does not register as pool having any chlorine, added another 1/2 gallon chlorine next day, still showing no chlorine in pool? I am surprised. Do I need to keep adding chlorine until it show on test kit or do I need to add conditioner so chlorine will register on test?
 
Drained pool due to algae bloom, Shocked pool and purchased new TF-100 test kit. Added 1 gallon chlorine and it does not register as pool having any chlorine, added another 1/2 gallon chlorine next day, still showing no chlorine in pool? I am surprised. Do I need to keep adding chlorine until it show on test kit or do I need to add conditioner so chlorine will register on test?
If pool wasn’t 100% drained I’d check the conditioner level and make sure you don’t have ammonia.
 
okay, sorry but what is CYA?
That’s the conditioner. Here’s a link to details of how much chlorine is needed depending on how much CYA/stabilizer is in the water.