"StringerBell" wrote in message ...
I am cycling with 65 gallons with Cured Live-Rock.
Will waste and die-off from the
Rock itself feed the Bio-Spira bacteria?

I would risk the statement that when you cycle the tank
with live rock or live sand than you do not need any
additional bacteria - in form of BioSpira or any other.
Live rock has plenty of bacteria living in the ocean
to populate your tank and do as bilogical filters.

Bacteria starters like BioSpira are usefull if you
start a new tank with no live rock with all "dead"
(dry) decorations or bleached coral skeletons...
In such situation adding fish and not using starter
will cause too much of the ammonia buildup because
bacteria amounts coming to the tank on/in fish
are not enough to keep up with the amount of waste.

Usually it is enough to add a cup or two of wet sand
from healthy running marine tank and there will be
enough bacteria on it exceeding any amount of bacteria
surviving in a sealed plastic bag on the store shelf.
Nitrification/mineralization process conducted by
bacteria is highly demanding in oxygen, so any sealed
plastic bag will reduce number of live bacteria with
time dramatically. Adding fresh sand is MUCH better.

Of course manufacturers of bio-starters will never
point your to simple and free solutions because it
is against their bussiness plans :-)