Just opened pool today. Pressure much higher than normal (22) on Filter with weak jets; pressure 10 on Recirculate with strong jets, so it's the filter that's causing the high pressure. Filter usually runs about 10-15. I have a Hayward sand filter with 350 lbs. sand. Sand was replaced before last season & was fine last year.
Pool is 10 yrs. old & never had this issue before. Some algae on opening but not out of the ordinary.
I have seen in some older threads that algae in the sand filter could be causing the high pressure. So my question is, do you Slam on Recirculate and then when done put the valve back on Filter & pressure should go down gradually? Or do you want to "Slam" filter at the same time?
Thanks.
Pool is 10 yrs. old & never had this issue before. Some algae on opening but not out of the ordinary.
I have seen in some older threads that algae in the sand filter could be causing the high pressure. So my question is, do you Slam on Recirculate and then when done put the valve back on Filter & pressure should go down gradually? Or do you want to "Slam" filter at the same time?
Thanks.
