I’m a first time pool owner and my pool was super dark green after opening. I have an above ground 18’ round 4’ deep and I can’t see more than about a foot down into the water. I have tried manually vacuuming as much as I can from the bottom but it is hard to tell what I’m doing since I can’t see. There’s definitely lots of big leaves, algae, and other debris settled at the bottom. I have my sand filter pump running 24 hours a day, and added a skimmer which seems to be helping with surface debris. I am adding double shock every couple days to keep my chlorine levels good (almost no cya when testing but I have added some to the pool, it’s taking a while to dissolve and affect my readings). My ph and alkalinity look good. I have also been adding phosphate remover and a clarifier every couple days. It seems to be getting less green in the mornings but then I try so vacuum some and stir it up to green again. What am I doing wrong, or what else can I do to finally get my water clear???