Ok guys- I have now got a pretty clear pool since I have been shocking for mustard algae. The fc level is over 20 and from what the Pool School says I need to keep it that way for 24 hours. I am in my first 4 hours of the mustard algae level shock program.
My question is- what do I do about the CYA level? It is now back down to almost 0. Ph level is about 8.
Sure need your help and thanks so much!