I just recently lost my Singapore angel that I have had for 2 years. It did not have any signs of disease till 2 nights ago when he was breathing rapidly. I noticed about two weeks ago that my red tail trigger has had a coat of olmost dust like coating on him. Also my powder and sailfin tangs eye are cloudy and have a few white speckles. All seem to be eating well. I was thinking of feeding a little more often with a added vitamin supplement. Any suggestions