Themadczar
04-27-2014, 11:27 AM
This is not an urgent issue, but last year it was suggested to me that I should only backwash my filter when the pressure rises 5psi above normal (except for algae cleanup or other out-of-ordinary measures). So I never backwashed after about mid-way through last season. After opening yesterday and vacuuming quite a bit of dirt/sediment from the bottom, my filter is still humming along at the usual 14-16psi. I know that it was explained that some dirt actually helps the filter function, and nothing was getting back into the pool from the returns, but I simply don't understand how the filter could take that much dirt without the psi increasing. Any thoughts?