have set up two new salt tanks in the past year with limited succses. I have always have fresh water tanks and wanted to dive inbto salt Sterted out with a 29 biuo cube that has done pretty well with out too much die of and soft corals doing weel. 6 months ago I set up a 72 bow front with sump with limited success. have lost many pricy fish due to ick I think???? have been having trouble with high nitrates for a long time and very little coral growth. any ideas where to start over?????????