Sand Filter Pressure range

thecanuck22

In The Industry
Jun 11, 2010
58
Vernon BC
Hello from BC (Okanagan) Canada.
So i have been lurking here for a few weeks and months before i registered, I have learned so much from this place, thank-you to everyone who contributes their knowledge!!

I have been looking for a guideline for my sand filter, in my life prior to TFP I was backwashing weekly, pump running 24/7 during pool season (mid-may to end sept).
Since being here I am running my pump and filter one day on, one day off, just started that after reading various posts about filter run times and such.
One thing I cannot find is how high can I let my pressure get on my filter? Clean it runs at 18#, I have been starting to backwash at about 22. How high can i let it get, or is that personal preference as to how hard I want to be on my equipment and how clean i would like my pool?
Thanks for taking the time to read and hopefully fill me in.
 

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
31,522
Sebring, Florida
It is certainly personal preference. Most folks here recommend about an 8-10lb increase and then backwash. Because my normal psi is somewhat lower than normal (10), I will usually backwash around 14.

If my normal was 18psi, I would suggest backwashing not later than 25 or so.

I have recently learned that "aggresive" (too often) backwashing is the leading cause of lateral failure in a sand filter.

I know you didn't ask, but I would suggest a pump run time of 8-12 hours daily rather than 24 on/24 off.
 

thecanuck22

In The Industry
Jun 11, 2010
58
Vernon BC
thank-you. 8-12 hours eh? cool, the less power i use the better.

now to find out what 'lateral failure' is, because i did my pool like that since i have owned it, this being the 5th season.
 

Other Threads of Interest