i would wait until it's at least close to being clear.....however i changed mine out and replaced my crushed coral with LS and put the fish back in while it was still cloudy......they were fine......but I'd wait until it's mostly cleared up just so you don't run any risk of damaging there gills or anything
Is it because of the removal of the cc or did you place in live sand???
Live sand will take a few days to settle, Im not saying its the right thing to do but i put my fish back in when it was still cloudy from replacing the cc with live sand.