I have a juwel trigon 190 which has numerous inhabitants, very much a "mish mash" of various fish. I am in the process of changing the gravel over for sand and have a new layout in mind which will have a heavily planted feel to it. My original plan was to only keep my two pearl gourami, sterbai coryies and two Bolivian rams. I was going to add a group of harlequin rasbora and leave it at that. However, I am now thinking of other options.....one of these is to start over again with discus (four of them and nothing else). What do ppl think? Any ideas?