Welcome to our forum.
Do you recommend keeping one of the floats with tablets in it for the tub? I just bought one to try opposed to adding the concentrate after each use.
My experience with pseudomonas folliculitus is that it takes a lot longer than 3-7 days to go away. The visible symptoms are gone in a week, but can take up to two months before re-entering the tub does not cause a symptom relapse.