Uh oh...problem with how you did your test.You have to test in the AM before the sun comes up....once any sun comes up those UV rays chew chlorine up. The reason we test in the dark is to rule out UV interference.
Maddie
Uhh. Ok I will test it again tonight and in the morning. I wasn’t up before the sun came up today but I will be tomorrow since I have to go back to work. Thanks for response.