White fiberglass pool steps are brown

mknauss

Mod Squad
TFP Expert
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May 3, 2014
36,066
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Add baking soda to raise the TA to 70 ppm. That should raise the pH.

Try vitamin C on the steps. That will tell you if it is iron.
 
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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,066
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
How did your pH go 'through the roof' from 6.8?
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,066
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
That is an issue. Start adding acid. Lower the pH to the 7's.
 
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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,066
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
I get mine at Home Depot. Some get it at pool store.
 
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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,066
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
If it is widespread, then you need to do an Ascorbic Acid treatment. And then either attempt to capture the iron before it re-stains or use a sequestrant.
 
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