This is somewhat normal, it does help to wash it in a five gallon bucket first however, I only did this to the new tank, the tank in the pictures I posted, I just took out the shell bottom and added the sand...I didn't have the option to use southdown tropical sand so I used just play sand... It took about 6 to 7 hours for it to clear up...It will, I would turn on a filter though, the sand settles and the dust is what is clouding the water. It will settle, however, much slower than if you run some type of filter...If you are using an aqua clear, just use the sponge and let it run...it will clear up in a few hours...Patience is the key...you just made a major change...
Where are your fish???