Lets talk about where beneficial bacteria coming from. A long time ago when we can get real live rock from the ocean which has multi bacteria source to introduce into our reef tank. Forward to now we all start with dry dead rock with just regular nitrobacter for cycling the tank. Those bacteria only good for fish tank only because they only handle amonia to nitrite and to nitrate. If u dont have access to real live rock or rock from someone has real live rock u have not introduce any other beneficial bacteria to your tank.@ycnibrc any thoughts?