How to get rid of cloudy water

[sharuq1]

Can you post a picture? Might give us a clue as to why it would be cloudy. Any other equipment on this tank? Skimmer, etc? If you have sand, when was it added?

As to the coraline, yes it likely would still have it, cured or not. Curing your rock should not kill your coralline unless you are doing it somewhere like an enclosed garbage can.

[belzebuth]

Did you added new live sand to the tank lately? You mentioned using a fluval 405 filter. What type or carbon/media are you using?