Mustard algae cropped up in my pool and I was having trouble getting rid of it with higher shocking and brushing so I tried Yellow Out from Natural Chemistry. It has sort of a staged process where you add it to the pool, wait 5 minutes, add shock to the dosage they recommend and then add more in 12 hours and then again in 24 hours.
I'm at the point where I added more shock 12 hours after the initial dose and shocking. Before I did so I tested on a strip (yes I know) that the process consumed all my free and total chlorine overnight which I believe is expected.
My question is, after I reshocked the pool and tested about an hour later my readings were still non-existent for total and free chlorine. Does that mean I should add more shock now or is that normal and just wait 24 hours before doing the last round of shock? I'm shocking with calcium hypochlorite.
I'm at the point where I added more shock 12 hours after the initial dose and shocking. Before I did so I tested on a strip (yes I know) that the process consumed all my free and total chlorine overnight which I believe is expected.
My question is, after I reshocked the pool and tested about an hour later my readings were still non-existent for total and free chlorine. Does that mean I should add more shock now or is that normal and just wait 24 hours before doing the last round of shock? I'm shocking with calcium hypochlorite.