Cloudy Water

Justantru

Member
Apr 16, 2021
18
Kaysville, Utah
Pool Size
10000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Hello,

My pool chlorine dropped to zero after a large swim party and the water is now cloudy. I have tried to start the "Slam" process but noticed a couple of really weird things:
1. When I add liquid chlorine the PH goes down vs. up (usually it goes up)
2. Second after adding 5 bottles of 7% (64 oz) bleach I still can't get a chlorine reading

My ph is reading 7.15, my salt cell is reading 3000 parts salt.

What should I do?
 
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Justantru

Member
Apr 16, 2021
18
Kaysville, Utah
Pool Size
10000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
CYA = I know is below 30 via my Taylor R0013 test (only test to 30 or above). I believe it's zero as I have not added any based on advice with a IC40 salt cell
Ph = currently at 6.9
TA = 80
Ch = Test is not working need to buy new test chemicals as I can't get the 25ml to turn red
TH = 400
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,634
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Get yourself a good amount of liquid chlorine, then do the following:
- Do NOT add stabilizer at this time.
- Increase the FC to 10 based on the PoolMath APP. Test the FC again in 10 minutes. If it fell below 5 ppm in 10 min, increase it right away back to 10. Keep doing this 10-min drill until you see the FC beginning to hold between 6-10.
- Once you see the FC starting to hold, then add stabilizer for a CYA target of 30 ppm.
- Now increase and maintain an FC SLAM level of 12 and follow the SLAM Process page.

Monitor the FC closely in teh early stages of the SLAM. Eventually you'll see a pattern.
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,634
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Do I adjust ph in the process?
Normally we lower pH prior to a SLAM, but yours is low already. While it's a little low, the elevated FC level will increase the effects of pH, so I would just leave it for now. Increase the FC, complete the SLAM then check/adjust the pH afterwards.
 

Justantru

Member
Apr 16, 2021
18
Kaysville, Utah
Pool Size
10000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Update:
1. Overnight test showed now loss of chlorine sitting at 10ppm.
2. Water is clear (only 15 gallons of 10%) gulp.
3. Ph is holding at 7.01
4. Going to locate some CYA today - all stores where out yesterday.

At what point to I increase the ph?
 

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Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,634
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Wow. You went from holding no chlorine to holding it all the next night. That's some weird stuff there. With the FC at 10 you can adjust the pH a bit if you like. You do want to make sure you have a minimum CYA of 30 as soon as you can find a source. If you have any doubt about chlorine loss later, you can always do anther OCLT. But always be sure to watch the FC and keep it balanced as noted on the FC/CYA Chart.
 

Justantru

Member
Apr 16, 2021
18
Kaysville, Utah
Pool Size
10000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
All,

Thanks for your help. The pool chlorine seems to be holding well. I have CYA at 30 now. I am having trouble getting PH to hold above 7.2. Seems to drop back down to 7.
Any thoughts around why?
 
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