Chlorine Lock ????

[poolrescue30]

My mistake, it took 2 drops of 871 to turn it clear and then after the 5 drops of 0003 it turned pink and took 2 drops to turn clear again. So it would be multiplied by .5 , I divided by mistake. The FAS-DPD kit is from TFP. As per the pool store test just now , there is 0.0 FCL and 0.5 CC ,there was .1 FCL and .6 CC yesterday. Does this mean we are on the way down ?? As far as TA it's 105 and Hardness is 170. It does look like we are heading down , but the FCL has been being used up very quickly ? Thanks

[CarlD]

My mistake, it took 2 drops of 871 to turn it clear and then after the 5 drops of 0003 it turned pink and took 2 drops to turn clear again. So it would be multiplied by .5 , I divided by mistake. The FAS-DPD kit is from TFP. As per the pool store test just now , there is 0.0 FCL and 0.5 CC ,there was .1 FCL and .6 CC yesterday. Does this mean we are on the way down ?? As far as TA it's 105 and Hardness is 170. It does look like we are heading down , but the FCL has been being used up very quickly ? Thanks

Well, if you measured 10 ml of water, and use 2 drops of 871 to clear it, your FC is 1.0.
If you then added 5 drops of 0003 and needed 2 more drops of 871 to clear it your CC is also 1.0
And your TC is 2.0

Now that you have your TF-100, don't bother with the pool store testing--it will just cloud ( ) the issue. TA and Hardness are fine for now--ignore them.