I bought a used 5 year old 92gal bow front SW tank six months ago. The person helped me set it all up we moved everything, Live rock, sand, crushed corral, three power heads,UV sterilizer, protein skimmer, and 16 fish/clean up crews. Things were going great for five months. in the past month, a fish caught ick, I was told at a LFS, that I thought was good, to do nothing the UV should fix it. I went back in a week as it was getting worse, still told to do nothing. Within in the last two weeks I have lost 13 fish. I am left with 2 cleaner shrimp, and 1 jawfish. What should I do?? Some questions I have is should I be using a filter, if so which one? What should I do with the ick, which I am sure is still in the tank? What should I do with the LR which is now growing Green and brown algae like crazy? I planned on starting with Fish only and once I have the hang of it I would add reef. My water has been perfect. I have a RO system which I use to make water changes. I really thought I had it down But now am at a loss. Thanks in advance for the advise..