And was told to let the tank set with no fish for 30 days.
Yes, 30 days to make sure the doesn't return. Use a hospital tank before you add any more fish to th e system. That way you can spot a problem before it goes in the display.:joy:
I lost some fish to ich a couple of days ago.
What kind and how many? Did you take them out?
SO what do I about the cloudness???
Try cabon and a water change. Are you using any other type of filters? Do you have a refuge?
One more comment, a sudden bioload decrease will not cause all the bacteria to die off suddenly. You can keep up the population by still adding food to the tank, BTW.