CC Levels when testing

[bluelakeside]

We are using the TF-100 kit for all of our testing. Our pool is FULL of algae and who knows what else and we are currently in the process of shocking. When testing for CC we are only getting a result of .5, it only takes one drop to turn our test water clear. That doesn't seem right to us. We are new to this, we just got out kit on Saturday. Are we missing something?
Thanks,
Melissa

 

[Richard320]

If FC is zero, you won't form any CC.

How much FC do you have?

The way the test works is to mix the powder, measure the FC with R-871, then add the R-003 drops. If it turns pink again, you have CC. If so, you add more R-0871 until it turns clear again.

 

[duraleigh]

Keep your posts in one thread....You'll get better advice because people can see your whole "story".

 

[bluelakeside]

Thanks for the advice Dave, will keep all our future posts in one thread.

We followed the instructions and have been keeping our FC levels above 12 for two days.

Should we expect CC levels above .5?

 

[chem geek]

Should we expect CC levels above .5?

Not necessarily. Though shocking algae with chlorine often produces CC, it does not have to. You can look at CC is just one of several reasons one might need to shock or to know when shocking already underway can be stopped. If you have an overnight chlorine loss >= 1 ppm or you have CC > 0.5 or you have visible algae or cloudiness, then you aren't done shocking.