You ask for advice, but you leave out vital information and get defensive when you hear something you don't like. I just fed my 55g a hour ago and it couldn't imagine it with your current stock. Even if you upgrade to your 90g, your still going to have to upgrade in the future. You just have to take responsibility for the fish you purchased and accept you can't take care of your fish for life. Your fish will benefit if you gave/sold them to larger homes. Then maybe we could work on a set-up for life for your 55g.