I'm at a loss. I run all Pentair Equipment (clean and clear plus 320 filter, variable speed pump, IC40 SWG).
Three weeks ago the pool was flooded due to flash floods in the area. After a couple of weeks of scrubbing daily to literally get the dirt out that was washed into the pool and cleaning the filters the pool is sparkling again.
I also shocked the pool using the overnight FC test and the chemicals are all in line in fact FC is still a little high from the shock (7ppm) but it's winter so that doesn't surprise me. No CC registering.
However, I can get rid of this brown super fine dust looking stuff that settles to the bottom.
I thought it was dirt or clay but I just don't think it is after brushing it to the drain repeatedly three or four times.
I know the opinion regarding phosphates and I get that having them isn't a big deal if you keep the FC in check but could this "dust" be phosphates settling?
Pool store does say phosphates are really high but I have never paid much attention to them when they say that.
I don't think this is algae but I have never had an algae bloom (I am pretty OCD so test the chemicals a LOT) so I guess I wouldn't know.
Just tired of brushing this stuff to the main drain and seeing it reappear the very next day. Any thoughts?