TF-100 test kit results...clarification needed??


New member
Aug 1, 2007
Long Island, NY
Hi Guys,

I'm new to pool maintenance.
I have a 30,000 gallon, vinyl lined pool and just performed my first test series.

The pool was opened and shocked yesterday.

Free Chlorine measured 20 ppm which I assume is normal while the shock is doing it's job

TA was 40 ppm. Should I attempt to raise this level at this time?

Also, I tested for Calcium Hardness since my pool water is very cloudy. CH measured 40. Should I attempt to raise this level, and if so how?

Step 3 of the CH test states: "NOTE: If the pool water contains copper, add two drops...."

How do I determine if my pool water contains copper?




Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
Sebring, Florida
Hey, Pete,

That's for those that KNOW they have copper. (very few) If you don't know that for a fact, simply assume you don't.