I have done a search through the forums for this topic but have come up with nothing yet.
The problem I am having is with the sand filter. When filtering, it is going as high as 15psi indicating that it needs to be backwashed (normal PSI for my system is just over 10psi). When I backwash, it registers 35+ PSI.. Everything was working well yesterday. I opened the pool yesterday and had the pump on filter for about 8 hours. I was backwashing every few hours.. I then shut it down for the evening and today it seems out of whack.
Hayward 1hp Pump.
Hayward inline chlorinator
Jacuzzi Laser 225 Sand filter (4 - 5 years old)
Pool is octagonal, 10 foot sides, 6 feet deep in the middle, 4.5 feet deep around the sides.
Any suggestions before I crack open the sand filter and change the sand?