We have a 2.5yo 17000 gallon in-ground pool with a sand filter (installed May 2020). The “base” pressure the last 2 summers (when clean) was around 17-18 psi. If it rose to 25 or more, I’d backwash it and the pressure would go back to 17-18. This year, the base pressure seems to be around 25. I’ve backwashed it several times with no change. Chemistry is good. Pool water level is roughly the same. Is it normal to have that much year-to-year variation?
If not, what should I look for?
Only differences this year are 1) my husband closed/opened the pool himself, and 2) there was an in-line chlorinator that we weren’t using and the connector hose kept leaking so we plugged it off.
If not, what should I look for?
Only differences this year are 1) my husband closed/opened the pool himself, and 2) there was an in-line chlorinator that we weren’t using and the connector hose kept leaking so we plugged it off.