Low CH

[Janelle]

Hi All,

My CH is 200. I think I understand that this can be bad for the equipment and metal. Would the low CH be causing a yellowing on my white pool steps? I also notice a more distinct dirty line at the water line on these same white steps. I don't remember this happening last year. Also, any advice on how to clean this up?

Here are my other numbers:

fc 6
ph 7.4
ta 75
cya 45

Thanks!

 

[jblizzle]

You misunderstand. Low CH does not mater for anything besides plaster and grout. You could have 0 CH in your vinyl pool with no issues.

Yellowing could be due to metals in the water.