Water looking a little yellow...

[1stTimePoolMom]

Water has been crystal clear until this yesterday. Here’s the latest data. Would appreciate advice on how to correct.

 

[MITBeta]

I would do an Overnight Chlorine Loss Test.

 

[Mdragger88]

It says you checked fc 4 days ago.
Fresh fc,cc, & ph #’s would be more informative.
You definitely need to do an Overnight Chlorine Loss Test as mentioned above.
If you fail a SLAM Process w/ liquid chlorine is in order.
After completing that you should raise your cya to about 70 so you’re swg can keep up without the sun eating all the chlorine. Also your salt seems a little low - most intex swg’s prefer around 2800-2900ppm. Just don’t go higher or it’ll throw the high salt alarm at u.
You can share your pool math logs with us by toggling on sharing in the settings menu

 

[1stTimePoolMom]

It says you checked fc 4 days ago.
Fresh fc,cc, & ph #’s would be more informative.
You definitely need to do an Overnight Chlorine Loss Test as mentioned above.
If you fail a SLAM Process w/ liquid chlorine is in order.
After completing that you should raise your cya to about 70 so you’re swg can keep up without the sun eating all the chlorine. Also your salt seems a little low - most intex swg’s prefer around 2800-2900ppm. Just don’t go higher or it’ll throw the high salt alarm at u.
You can share your pool math logs with us by toggling on sharing in the settings menu

Yep, Overnight test: FC dropped from 9.5 to 7 (was 9.5 because I had run the Intex SWG boost all day yesterday.
Here is a link (thanks for showing me how to provide ) PoolMath Logs

 

[1stTimePoolMom]

Well, I added chlorine (FC is now 13.5) but still yellow. Suggestions
Link to my pool logs: PoolMath Logs

 

[mknauss]

What was this for?
Added 3.5 lbs of monthly salt maintenance (77% potassium monopersulfate) to skimmer

 

[Mdragger88]

SLAM Process includes testing fc & adding liquid chlorine multiple times per day (aka the Maintain part) until u pass all 3 end of slam criteria. You failed the Overnight Chlorine Loss Test so you definitely need to slam but
The yellow is interesting are u on a well?
Can u upload a pic?

 

[1stTimePoolMom]

What was this for?
Added 3.5 lbs of monthly salt maintenance (77% potassium monopersulfate) to skimmer

I had it on hand and thought - why not? Bad decision?

 

[mknauss]

Very. Adds sulfates to the water. Those will destroy the SWCG.

Have you added this in the past?

 

[1stTimePoolMom]

Yes, monthly but not since May....
What do I do now

 

[mknauss]

With your situation, I would drain this pool and start over. The yellow water and all the sulfates. Best to dump all this and start fresh.

 

[1stTimePoolMom]

Yikes. Okay. Thank you for the advice. Should I trash the monthly salt maintenance stuff?

 

[mknauss]

Should I trash the monthly salt maintenance stuff?

Yes. It has nothing to do with salt.
I suspect the yellow color is from a metal, possibly the SWCG, being corroded by the sulfates in the water.

 

[1stTimePoolMom]

Ugh. Thanks- appreciate your time