Not much to report today. Water didn't look any different after running the sand filter all night. Drained about a foot while vacuuming more muck off the bottom. Set up a line to siphon another foot off.
I think your biggest issue is the amount of organics on the bottom. Can't you just filter to waste using a line to the bottom to remove all the gunk (know it is blind), this will also siphon off a foot if you let it run and suck all the stuff off the bottom. Seems like that should be the focus. Get that stuff out.
This is what I did. I drained half and brushed the entire time because the drains don’t really pull anything that isn’t 6 inches away. So I blindly swept (and swept and a swept ). I still didn’t get it all and needed to vac once it was full again, but no question I got most of it the easy way.
I was planning on vacuuming to waste some more today but got rained out. Somehow I lost siphon in the hose so there's still 18 - 20 inches in the shallow end. Added two more gallons of chlorine & going to run the filter overnight. If clarity doesn't improve then I'll talk to Lois about ordering these. Tarp Rope