how often do you test your fill water?

[crackers8199]

i tested mine as soon as i got my TF-100, but how often should i be testing it after that? once a year? more often? never?

 

[Msch99]

I did mine when first filled. Shouldn’t change much. I test pool after topping off anyway.

 

[mknauss]

Mine never changes as it comes from the Colorado River about a 1/4 mile away. But in other areas, where they may mix well water and surface water, it might be useful to test the fill water prior to adding a large amount.

 

[GrandizerGo]

I never test it....I adjust my levels based on what I measure from the pool rather than trying to guess how my fill water will affect things. My city water isnt too crazy though.