Is your FC holding or are you losing lots of it? If you do have mustard algae, your FC won't hold and you will have a CC reading. My guess is that it is pollen. My pool has had way more pollen this year than I remember in previous years and I think I remember reading that several other people here on the forum noted that as well. I would suggest getting a skimmer sock and putting it in your skimmer basket. If it is pollen, you will find it all over the sock and will need to rinse it off. My bet is on the pollen. Let us know what you find out when trying the skimmer sock.

Also, I appreciate your thoughts and prayers. One thing this cancer experience is teaching me is to never take people for granted and to enjoy every single minute of every day --- especially those spent with my three wonderful sons who are without a doubt the treasures of my life. Thanks again.

Lisa