High reading for CC after shock treatment

[poolaris]

The CC reading immediately before adding the CL was zero.The water has been in spa for 3 weeks and I have only used the spa 6 times and always after a shower so there would be no lotions or sweat. It is always covered when not in use and the filter is on 24. No other chemicals have been used. When testing I fill the plastic container to the 1st mark from the bottom and use the.2 muliplier. Sorry if a gave the wrong # asI always use that mark and its been awhile since I looked at the scale numbers. Too late, as the water looked sparkling I already dumped it in the pool a couple hours ago. The pool reading is 3.0 on FC and less than 1 CC. It was zero yesterday, so tonight I'll pour half gall of CL.This is a mystery as the highest reading for CC in the spa has been 1.0 and that is when the water starts to look cloudy.

[PoolDoc]

No chlorine + people 'goo' equals FC=0 *and* CC=0

Add 10 ppm chlorine to a pool with no 'goo', and you get FC=10. But add 10 ppm to a pool or spa full of 'goo' and you can get anything from FC=0 & CC= 0 to FC=0 & CC=10 to FC=5 & CC=5

Talking about people 'goo' . . . bugs many people, because they aren't comfortable the stuff that their body does, or that other people do.

Without getting into more detail, putting 2 people in a hot tub on 6 different occasions, and keeping the spa covered between is MORE than enough to account for your CC results.

You *can* chlorinate the CC out, but unless you are in a water restricted area, it's better to use it to water the flowers than to add to the pool. (Plants like people goo, more or less!)

[Watermom]

When you fill to the bottom mark on the tester, that is 10mL and you need to use the 0.5 multiplier.

[poolaris]

Still don’t understand why CC was so high. As mentioned, the spa has only been used by myself and always after a shower, also for only about 5 minutes at a time. Chlorine has always been kept at a min. of 3. Could it be that after shocking it that there was so much gunge in it that it was converted into lots of chloramines? If that was the case, how could it have got there? Strange that the water was so clear & sparkling.

[PoolDoc]

There are 3 possibilities that I can think of:

1) People goo
2) Possibly in the past, you added some sort of pool chemical that reacts badly with chlorine
3) Some sort of testing error occurred.