Re: Should bug-starters be aerated?
You can check out the e-symposium transcript Steve has set up .....lots of stuff in there.....
You can do either depending on your intended use:
if you 're adding the brett to the secondary fermentor and planning on aging whatever it is you brewed, then adding the smack pack will do just fine.
If high population of Brett is the plan (starter) or if the culture is old and a starter will benefit for good health, then oxygen will enhance growth significantly.
Brett (strain dependant perhaps) will produce more acetic acid aerobically than lactic and vice versa anaerobically.
This can be buffered with 0.5-1% CaCO3 if desired.
The other bugs (Lactobacillus) do not need oxygen and (Pediococcus) does not like oxygen at all.