I am opening my pool and have had to replace filter. Was using cartridge Hayward in the past and now have Hayward EC50 DE. Everything seemed to have gone well installing new filter and following startup instructions. Water was not green, dirt on the bottom which is centering nicely due to the filter flow and slowly clearing up.
My problem or rather question is that the flow drops very low after only about an hour. It will immediately return to normal after re energizing the filter with the pump method and appears to be working normally. It seems to me though that this should not have to be done so often. I did the back flush once thinking there was some issue there but no.
Is this normal during the opening part as the pool is extra dirty and the filter is so fine? Any ideas are appreciated.