Algae or Metal Stains?

JDLT11

Well-known member
Jun 27, 2016
113
Fontana, CA
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!IMG_6577.jpgIMG_6585.jpg
 

JamesW

TFP Expert
Mar 2, 2011
27,117
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?
 

JamesW

TFP Expert
Mar 2, 2011
27,117
I don't see copper, which would be blue/turquoise.

Watch for any blue color when you hose them off.
 

JDLT11

Well-known member
Jun 27, 2016
113
Fontana, CA
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.
 
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