No, it is still brown as ever. Last time it took me two weeks to finally get some hint of green in the middle of the SLAM. It is truly amazing how much dirt gets into the pool.
Having experienced Mudslides twice consisting of Clay Silt, it does take time, but in both cases in less than a week I had crystal clear water. For me, things I learned:
1) For the first two to three nights, shut the pump off. Let all the particulate settle. You can even add a little Floc if necessary. I know this is contrary to 24/7 pump with SLAM, but you are dealing with silt along with possible algae.
2) In the morning vacuum SLOWLY to waste. I can't emphasize enough that go very slow and do not stir up any of the particulate. It would take me 2 hours or more to vacuum in this manner, filling with a garden hose in between.
3) After the 3rd day, add DE to your sand Filter. Backwash first to start clean, then begin adding DE at the skimmer, 1/4 cup at a time. Watch your pressure at your Sand Filter and when it starts to climb, stop. Let that run for several hours with pump at fast speed (greatest suction). Keep your Main Drains open as most of the silt will settle to the drain, not float through the skimmer.
4) After a few hours, backwash, and repeat.
5) During this whole time, SLAM, with FC above your shock level. I had 30 CYA, so a slam target of 12, but I never let it drop below 15. There's lots of organics in mud, so better to keep it elevated.
6) After about the 5th day, you should be able to see the bottom drains (at least in my case). The DE is really the key, because Sand filters are only good to filter down to the 15 micron level. In my case, my mud was clay which is in the less than 5 micron range. So without the DE and without Vacuuming to waste, all the sand filter does is recirculate it back into the pool and it will never clear.
7) Once I saw the bottom drains, it was only two more days both times for crystal clear water. Hopefully, you can experience the same!
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Just as an example, this is what I started with
and ended with