I've lived with this pool all my life and know the basics from watching my parents take care of it. However, life took over and we haven't had a chance to open for a couple years. Got the filter running last season and started to clear it up a bit before I noticed high filter pressure I couldn't figure out. It would run normal for a few hours but slowly built outside of the normal range. Threw in the towel when my son was born. Now I really would like to have my pool for the kids to swim this season. Pretty sure I tackled the pressure issue because I quickly put everything together last season and didn't make sure all of my connections and hoses were air tight. Should I change the filter sand? And how do I start tackling this swamp? I've already scooped out as much debris I could come across.