Crushed coral is horrible for clouding up a tank like that. Normally it will settle with time, and patience is likely your best alternative.
If you are in a hurry, a canister filter with a micron cartridge will help.
CaribSea makes a clarifier that claims to be safe for everything (inverts and corals included). It coagulates the particulates to make them settle. I have used it after adding "live" sand to a partially stocked tank and had good reults, but it will create a film of "dust" over everything in the tank and if you're running a protein skimmer, it will go into overdrive and need a good cleaning afterwards.
There are several other products on the market as well, but most will end up hanging around your tank and are toxic to inverts.
What kind of tank are you setting up?
It is a violation of federal law to use this product in a manner inconsistent with its labelling.