I had a 55 gal FOWLR some time ago, and have found some time and money to get back into the hobby. In any case, I received an old Biocube 14 from a co-worker and it hasn't been setup for probably >5 years. It looks pretty rough, sand still in it, etc. Before I get into any type of setup, I assume I need to clean the tank up, which is where my concern lies. Are there any considerations to take into account after a tank has sat this long? What should I use to clean it and get ready to start a setup as I am new to this type of setup. Any help is much appreciated!