TA Test Color Changes

[JTAG]

Just did an new fill on my hot tub and I'm going to use the BBB method since I had a great year using it on my pool. When testing TA I'm not getting the typical color changes. Color starts out a blueish green and changes to a yellow orange. Is this normal, I'm assuming I should just watch for the change.

Thanks Jim

 

[Richard320]

That's normal with high chlorine. You are correct that the change is the key.