After I filled my 55G, I did a 75% water change, and filled back up. Then within 2 hours, my tank was clear. My 55G has pool filter sand as well. I love it. Now I have MTS on the way for it from someone on the forum here. They are sending them out this week, Tuesday I believe, so I should have them in a few days.
Putting most of them in the 55G and a few in my 75G.
You will love the PFS once everything settles. My loaches love it too.