Hi all, we have a 24 x 44 lazy L pool way up in Edmonton, AB. Crazy place to have an outdoor pool because we only use it about 3-4 months of the year but it came with the house. With a very small number of residential pools in the city, it is almost impossible to get professional help even if you ask for it as they spend their time doing commercial jobs. As such, I have tried to do most of my own maintenance over the past 10 years. Last year I snagged a crazy good deal on a new filter and pump so I switched out our old sand filter for a Hayward c3030 that came with the Hayward filters and another nib set of 4 Pleatco filters. I had some issues at the start of the season that had me struggling to get things working properly and so i made a mistake and dumped some coagulant into the pool to help clear it. In hind-sight I don't think I needed to do that and it seemed to plug up the Hayward filters prettty quick. I tried washing them as instructed with TSP but never did use acid. Even after washing they would jump up 8 psi in 3-5 days so I swapped them out for the new Pleatcos. Those went about 4 weeks then the PSI jumped again so I washed them and put them back and I was lucky to get 3 days before the PSI was up again. I washed them in TSP but it did not help at all. My pool has been extremely clean and well balanced all year with no issues at all other than I am burning up really expensive filters and have no idea what I am doing wrong. I can try the acid wash but I am wondering if there is something else that I am missing or have missed that would cause me to have this problem?? Thanks so much in advance.