My filter pressure is not changing much (150 pound sand). On low, the psi stays around 4 and on high it hovers around 16psi. I vacuum and backwash weekly but if my psi stays normal is it ok to go longer between backwashes? Pool is crystal clear (knock on wood) and my CC is usually measured at zero. I have one of those mesh sock thingies in my skimmer basket to catch the really small debris.
Thanks in advance for your help!