So since I now switched to DPD-FOS testing, I have a good amount of OTO re-agents still left. So, im sure this has already been discussed, but I couldn't find it by searching, so I will ask again.
I know the OTO testing considered obsolete, but is it still considered accurate enough to use on the daily basis, when pool has no issues and you're just maintaining your chlorine at the under 5ppm level? I'd rather save my FOS-DPD re-agents for when I really need to use them and still use the OTO testing for quick daily checks.
What say you?