I'm getting another tank. I plan on getting a 90g tank, that I want to have 1 Oscar, 1 Convict, and 1 Dempsey. I know thats pushing it, but will be doing 80% water changes weekly, and will have 2 Cascade 1500's for filtration(heavily filtered). I would like to put 5 Tiger Barbs in as dithers, would that be good or would they become lunch? I could go with 3 Silver Dollars if you you guys think the Barbs won't work out? Thanks for the help, this site is awsome!! Thanks