adjust cya before or after shocking

[Kateyru]

Just tested with my new K2006. Here are results, FC = 16, CC = .5 and CYA = 30. What's the next step...retest in the morning?

[BigDave]

Yep, as close as possible to sunrise. You want to find out if you've lost any FC overnight. The fact that you have .5 CC is significant: it means your chlorine is getting rid of something in your pool. In the morning, if you have lost no FC and have lss that .5 CC, you'll be ready to declare victory. At this point, you'll probably have to maintain shock for another day. You are very close, keep it up. let us know your readings in the morning.

Congrats on the K-2006. I find it sooooo much eaisier than any other kit I've owned.

[Kateyru]

Do I test FC, CC and CYA again or just FC and CC?

[Watermom]

FC and CC. No need to test CYA again for awhile and you don't want to waste that reagent.

[Kateyru]

I didn't think so but wanted to make sure! Thanks.

[Kateyru]

This morning test results: FC = 18.5 and CC < .5 Dd I need to add more bleach? If so, how much? Thanks!

[BigDave]

Test as often as you can and bring the FC back up if it drops below 15.

[Watermom]

Did you add bleach after you tested last night? How did your FC go from 16 to 18.5 overnight?