This is my first yr with TFP ,and thanks to everyone’s help, I have gone from a green opening to a crystal clear pool all summer! From the day we opened, the water has read 5400 ppb of phosphates. Because of an extended vacation, and no one to tend the pool,we will close the week of 9/10. I’m thinking of treating the phosphates before closing. Is this a good idea? Any other suggestions.?