Algae or Metal Stains?

[JDLT11]

Hi,

Looking for help in identifying the following stains in my pool. Pool is white plaster and stains look like Aqua Color stains thorught the pool at this point.

Water Measurements:
FC - 7.0
PH - 7.2
TA - 70
CH - 475
CYA - 35
Salt - 3350
Temp - 77

I did put in a Vitamin C in the stain including picutures from before and after.

Thanks!

 

[JamesW]

Looks like copper.

Do you know if copper is in the water?

If you have a cartridge filter, can you remove the cartridge and show a picture of the cartridge before you clean it?

 

[JDLT11]

Here a picture of the filters

 

[JDLT11]

Here a picture of the filters

 

[JamesW]

I don't see copper, which would be blue/turquoise.

Watch for any blue color when you hose them off.

 

[JDLT11]

Thanks, mostly dark green mud like stuff. I did purchase citric acid and poured it in las night after letting the FC drop to 1.0. Today it’s at 0 so pouring in chlorine.