cloudy water

All of a sudden my tank is getting cloudy. Water params are good. 0 nitrates, 0 nitrites, 0 ammonia, 0 phosphates ph is 8.1 calcium about 450 but the water is very cloudy. Did a 30 gallon water change it cleared a little but the cloudiness came right back. Fish are all doing fine but 1 coral has not opened in 2 days. The rest seem fine. Anybody got any ideas. I am at a loss. Have not done much to the tank over last 2 months or added anything. Thanks in advance.

Tony

 

Do u have any leathers in ur tank?

 

Try running some carbon if your not already. Might be a bacteria bloom too. Hard to say. Can you get a picture?

 

Also try running filter floss in the tank and change it every day or two. Discontinue any supplements that add trace elements and especially those with gluconate in them.

 

Nope

 

I have 2 large "socks" and have been changing them daily...no help. not dosing anything right now

 

I will try the carbon. Thanks. Will also get a pic up soon.

 

sounds like bacteria to me. have you recently put in any new additions or else anything that could act as a carbon source?

 

have not added anything in 2 months. Cloudy water started 2 days ago. The only thing I do not know for sure is if 1 of my or maybe both of my serpent stars died. They are always hiding in the rocks. I see them very rarely. I know everyone else is alive. i also have noticed the "purple" algea is loosing its color.

Here is a pic of the tank

 

Do u have a uv steralizer on the tank?