Cleaning set up question

[Frenchie2]

I will be setting up a used 29g bio cube but I bought a new pump for it (submersible). I seem to recall a thread about cleaning new equipment before use to avoid any disaster when putting livestock in when set up is ready. Should I clean this new pump with something before hand - or even the tank (it has been sitting in the crawl space for quite some time). Your input is much appreciated!