I notice recently that I have lost about 10psi at my filter. I've gone through everything that I can think of to resolve the issue, but I'm not sure where to look now.
Yesterday I went out and backwashed the filter and I notice that when I put the multiport to backwash I gauge went up by 10psi, but then back down 10 psi after I returned the valve to filter.
Do you think that the multiport is leaking or could it be something within the filter housing?
Thanks for any help,