Amonia?

I had my power brown die two weeks ago. I am having a bit of white clouding in the tank and tested at .25. I know any amonia is not good. The problem is that the fish is nowhere to be found. I know its supposed to me a 0 for amonia and I did a 20 percent water change today with the clouding staying the same? What is the level that is dangerous to the fish? I have to wait for more water until tomorrow to have another 20 percent water mixed. I have a 220 so I am doing 35 gallons which is maxing out my ro per day to do w/c. Any advise. I used prime as a band aid but its not touching the cloudyness.

 

The cloudiness may be caused by a bacterial bloom, high ammonia, calcium precipitation. Prime is a great product but do water changes and switch out the carbon if your running any.

 

I have tested the amonia is .25 the cal is 420 and my carbon is 2 weeks old? Its puzzling me. all I can think is its the dead fish somewhere????

 

It could be the dead fish, or maybe it's detritus or excess food that is collecting somewhere maybe?
Do you have a cleanup crew that will take care of a dead fish eventually? If not it might be a good idea to consider one, hermit crabs, brittle stars, nassarius snails etc.
I believe if you used prime you may still test positive because I believe it just binds with the ammonia to make it non-toxic but test kits may still register it.
I would just keep doing water changes and wait it out. The cloudiness will disappear if it's a bacteria bloom once they've exhausted all of the nutrients that they are feeding off. Do you have an oversized skimmer?
Also running fresh carbon might help, carbon can be saturated in 2 weeks easily if there is a high organic content to the water.