I'm so lost Chorine 0

hilda

Member
Apr 12, 2017
16
new caney tx
My husband did the absorbic acid treatment to my pool a couple months ago. Everything was looking good. I tested my chemicals Monday here is the results.
4/23
FC 5.5
CC 6.5
CH 225
TA 90
PH 7.5
CYA 55

I though the CH was a little low so yesterday I added some clorox pool calcium hardness to raise it. I also added a gallon of bleach. Didn't check chemicals yesterday got side tracked. Just checked them right now. All my chlorine is gone I don't understand how it went down to zero. Can someone help me. Thanks
New numbers 4/25
FC O
CH 250
PH 7.5
TA 90
CYA 55
 

Demegrad9

Well-known member
May 27, 2017
359
Coventry, CT
You have extremely high combined chlorine (CC), what was CC on your 4/25 measurement?

High CC is indicative of the fact that your FC is reacting with something in the water, you possibly have a nascent algae bloom starting. If so, that's what's consuming your Free Chlorine
 

DeanP66

Well-known member
Mar 26, 2014
702
San Jose, CA
How does the water look? Is it clear and sparkly, or is it dull, and (or) cloudy? You probably have an algae bloom beginning if the FC is getting eaten away so quickly.

By the way, with CYA at 55 (round up and call it 60), you should be targeting FC of 7-9 and never below 5. That's probably why something started growing in your pool.
 

hilda

Member
Apr 12, 2017
16
new caney tx
The water is clear and sparkly. I added some bleach will test again later today to see what is does. I guess depending on this results I will know if I need to slam is that correct.
Thank you all very much for all the help.