Well, sounds like you are doing the test correctly.

We have had several people on the forum this year who have had EXTREMELY high chlorine demand upon opening. Sounds like this might be the case for you. Unfortunately, the only way to fix this is to keep slamming it with bleach all day long day after day until you can hold chlorine overnight. It gets frustrating because you think you're never gonna get to that point, but then, one day you do.

So, be patient and test and shock it with bleach as many (and I mean AS MANY) times per day as you can. It will clear. May take awhile ................ sorry to have to tell you that.

There are quite a few other threads where this has happened. Maybe read some of them to reassure you that it will work. We'll be right along with you til you get it fixed!

So, that I don't have to go and re-read this entire thread, can you outline again every ingredient you have put in this pool since you opened it, please.