Hello, we opened our inground pool yesterday. We have a DE filter. I added DE and the pressure started around 24/25. We ran it overnight as the water is def green. The pressure this morning was about 38 and I did not feel pressure coming out of the jets in the pool. I have never seen the pressure jump up so quickly.
We replaced the filter last year. It was new in May 2021. We asked our pool guy if we have to open it up and clean the grids and he said that is not necessary.
I was thinking of backwashing to see if it fixes the problem. Is that what you would recommend? If so, do I need to add DE again after backwashing?
On a side note, we normally have someone open for us, but we are doing it ourselves this year. Appreciate any help. Thank you.