I had that on my fist tank years ago. turn off lights for 3+ days and cover the tank with garbage bags or whatever to keep all light from coming in.

+1 to the rocks cycling. Adjust the skimmer and turn of the lights and wait...I once had a tank that looked that way for 4 months.....stupid rock

The test result stated that the levels were good, which is surprising when the tank looks like it does. It is city water, and its the same in my tank and I have had no problems...(knock on wood) There are two blue damsels in the tank, and they are not getting over fed, they are getting a pinch of food a day.

Is he using a dechlorinator? If so, what brand? Some are known to foam up. Does he add anything to the tank besides the salt? Anything at all?

It does look like it's cycling, but that's a long time to be cloudy for. What brand test kits does he use? How old are they? When he says the levels are "good", what are the actual numbers?

What city are you guys in?

We are in Chilliwack. And I will have to work on getting that info.

3 months like that, I'd be draining and starting over.

Have to ask, it is marine salt? I have come across the suggestion to cycle a tank just using water softener salt.

Well, blacked out the tank for 60 hours... still cloudy, but maybe looking a little better... not much thou.