I'm going to do a remodel (add a sump, re aquascape etc.) on my 29gal Bio Cube. I read on Melvs reef about rinsing your sand (Melevsreef.com - Rinsing Sand) am I better of doing that or just getting new live sand? I don't want to start a cycle. When I moved my 40 to my 40B I got new sand & did not have any problems, but why spend money needlessly. My sand now is about 3 years old. What's your thoughts?