Help with stains

mterrell77

Active member
May 29, 2016
32
ada, mo
#1
I have these stains that will not go away on my steps. They keep getting worse. They will not brush away. Any suggestions on what it could be or to do?

FC-5
CYA-60
PH 7.4
CH-200
TA-70
IMG_1377.jpg
 
OP
OP
M

mterrell77

Active member
May 29, 2016
32
ada, mo
#4
Sorry I have been out of town. It has never been tested for metals. It is municipal water. I just opened the pool. I tried the Vitamin C tabs to see if it lightened it up and it did nothing.
 

JVTrain

TFP Expert
Feb 3, 2014
5,080
Central Minnesota
#5
Next step is to put a chlorine puck on the stains for a minute or so. They could be residual organic stains from a previous algae issue. If the trichlor puck fades them, it's likely organic and they could fade over time as you maintain proper sanitation.