Last night my water was cloudy and i checked my filter.
The filter pressure was up about 8-10 over the start line.
I back washed, and rinsed and put in new DE powder.
I then shocked the pool, and put in some liquid algae prevention.
This morning i went out and checked the clarity of the pool (it cleared up) but my filter pressure was way up again...
What would be causing that, or how do i go about fixing it?