For both of you, new tank syndrome has nothing to do with cloudy water. It is the blanket description that a LFS will apply to what happens to fish in an uncycled tank. It refers to the chemical poisoning that often happens to fish in an uncycled tank.
Cloudy water is not usually a problem that needs a solution. It often seems to happen during a cycle and clears on its own shortly after. If you have a green tinted water that is also cloudy, cut back on the amount of time that the tank lights are on and it will disappear quickly on its own.
For FishNovice, check your water chemistry. If you had a filter stop and then failed to retain the old media, you may well have a mini-cycle or even a full blown cycle happening in your tank. Your water changes may be all that is keeping the fish alive and it would be good to know one way or the other. Test right before your next water change and post the results here please so that we can help you.