Quote Originally Posted by shoogles View Post
So, we attempted the CarlD Shotglass method of testing our water, but it didn't seem to work. No matter how much we diluted (1 to 2, 1 to 3, 1 to 4, etc.) it always read at .2. Can't figure out why.
The only tests I know of that will measure as low as .2 ppm are an FAS-DPD titration kit and some of the electronic testers and strip readers. How are you testing?
So now we have no idea if we have enough bleach in the pool to have reached shock level or not... and I'm not exactly sure what we'll do tomorrow when we need to test the water again and add more bleach. Yikes.
If you are testing low chlorine then you do NOT have enough bleach in the pool.