I wasn't going to post anything about my algae problem because I thought that I beat it but I am not so sure. After testing today and readig a few posts on mustard algae, I am wondering if this is my problem.
I test FC and PH daily and my numbers have always been fine, but about two weeks ago I started to see some greenish spots on the sides of my pool and some brownish spots on the floor. They seemed to mostly be where there was shade. Anyway, I would scrub them and check my numbers, including my CC, and it all seemed fine. A couple of days later the spots would be back. (Also the water has been clear and blue as always.) Cut to last Monday when I figured I should shock the pool. I took my FC level to shock, 16 (I shocked at algae level and not mustard algae level). I ran my filter 24/7, and scrubbed a few times a day. I ended up doing this for about 5 days until it seemed like the spots where not returning and my FC level held throughout the night. This past Saturday I cleaned the filter well and started to run it on my normal schedule, 8 hours per day. Now today, Monday, I tested and my FC was 9 but my CC was .5 again.
As I posted earlier, I am going away for 10 days in a few days and I am concerned that I will not have this all straightened out.
My questions are, does this sound like this could be mustard algae? What should I do next to make sure I am rid of it?
My most recent test numbers are:
Looking for any advice.