I have a problem with my pool. All of my chemicals are pretty good but when you brush the bottom it is a big cloud of green.
My FC =9.5
I am using the TF100 test kit and the BBB method for the last 4 weeks.
I am now shocking the p[ool. I just don't get how yesterday and this morning I have 0 CC but somehow today I developed green all over the bottom of the pool. I have raised my FC to 21. It is tuff to get much higher but I 'm working on it. Any thoughts and help with this problem would be greatly appreciated. I am very diligent in checking the water balance every morning and adding whatever I need to add. I just thought that as long as the #'s were right this wouldn't happen.