Well I did it (5 hour long project), I did half, and the outcome was very very cloudy. I rinsed the sand, for about 35 minutes and below is how the tank is. Before the cloudy took over the whole thing I was able to get the fish out and put them into a small 2 gallon tank with a power head. but I don't know if I should keep them in there all night or not.
What is the quickest way to clear the tank? With the filter, skimmer, and power heads on? Or should everything be off?
What the fishes are hanging out in currently: