Discolored vinyl

Aug 23, 2016
9
Macon, GA
#1
Start-up was going well, except salt level was stuck 2300-2600, so cell wasn't generating. I was going by the level indicated by the SWG, which must have been malfunctioning. I was only adding salt one or two bags daily. I then added one lb of shock. Next day, the salt jumped to 4100 and the vinyl is discolored, a brackish brown color. It will not scrub off. This is the water chemistry right now:

salt - 4000
temp - 76
FC - 7
CC - 0
TC - 7
CH - 125
TA - 140
CYA - 0
pH - 8.2

Any observations or suggestions?
 

pooldv

Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
Aug 10, 2012
24,993
DFW, TX
#2
It takes 24 hours or more for the salt to fully dissolve and mix into the water. Use bleach to maintain chlorine if the SWG isn't making chlorine. Sounds like you've got some algae now and need to follow the process to kill it. Be sure to lower PH and add CYA as shown in the instructions before you start.
 

YippeeSkippy

Mod Squad
LifeTime Supporter
Jan 17, 2012
9,087
Evans, Georgia
#3
I dunno.... I was thinking that with that high pH perhaps they've got iron in the water and it precipitated out of solution? The shock sent it over the edge.......

Do you fill from a well, Rexd?

Yippee :flower:
 

pooldv

Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
Aug 10, 2012
24,993
DFW, TX
#4
Yes, that could be a sign of iron precipitating. Please post a pic of the water.