Here's what I gleaned from an article I read about our LR and the beneficial bacteria that live within it. Note: The way I understand it

Our live rock gets old and should on occasion be replaced with newer more lively live rock. Well I don't want to replace *any* of my LR so I was looking for a way to replenish the bacteria. Note: I'm not having an issue with nitrates at all. I do now understand more why peoples dose Vodka or Mb7. For the beneficial bacteria. So I guess my questions been answered