Chlorine not showing up in SWG.

TomLane

Active member
Feb 19, 2017
31
Tampa
Hello

We just got the okay to add salt to our resurfaced pool and also added Chlorine. I added both the salt 640 pounds, and Chlorine 110 ounces of 10% bleach on Friday. Today, I tested and the salt is 2100 ( I already knew I would need more salt) but the chlorine is still not showing up. The pool pump has been running 24/7 since the salt was added and the SWG was turned on yesterday.

Not sure what I might be missing? Does the chlorine take a while to show up? I will be adding muriatic acid for the PH today but am not sure if I should add more chlorine.

TA is 120
CYA = 60
PH is 8.0
CH = 300

Thanks, Tom
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,382
Pleasanton, CA
The SWG won't produce CL if the salt level is too low. A warning should have shown on the display. I would continue to use liquid CL until you have the salt level correct.
 

TomLane

Active member
Feb 19, 2017
31
Tampa
Added the additional salt yesterday afternoon and also added muriatic acid to lower the PH which was 8.0, and liquid bleach 10%. Still not showing any chlorine when testing today. Not sure how long until I should see the chlorine levels increase?
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,382
Pleasanton, CA
How much bleach did you add?

How old is your test kit?

At this point you may have something consuming all of the chlorine. I would bring it up to at least 10 ppm with liquid chlorine and then see if you lose anything overnight to warrant a SLAM.
 

TomLane

Active member
Feb 19, 2017
31
Tampa
Added one gallon of 10% bleach, Test kit is new Taylor 2006, also had the pool shop check and they read no chlorine, Which try adding liquid chlorine again and check again.
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,382
Pleasanton, CA
Each gallon of bleach will add only 3.5 ppm to that size pool so I would add at least two gallons but if there is something growing, it will take a lot more than that.
 

domct203

Bronze Supporter
LifeTime Supporter
TFP Guide
Jun 3, 2015
3,959
CT
How long after adding chlorine do wait to check FC? An hour later, 12 hours later, next day?
 

domct203

Bronze Supporter
LifeTime Supporter
TFP Guide
Jun 3, 2015
3,959
CT
I was asking the OP.....


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TomLane

Active member
Feb 19, 2017
31
Tampa
I've been checking about 12 hours later. Today I checked an hour after adding 3 gallons of 10% and I have a lot of FC. I tried testing the exact amount but is was using too any drops. I will see how it does overnight.

Thanks, Tom
 

TomLane

Active member
Feb 19, 2017
31
Tampa
Thats what I am thinking. Showing no FC 7 hours after I tested and showed plenty. Water still looks crystal clear.