Wyeast Activator - Small batch efficiency

[SteveMarconi]

I know that Wyeast Activator (125ml) packets are designed for standard strength 5 gallon batches and should be started beforehand. If I were brewing a 2.5 gallon batch, could I pitch the full 125ml without the use of the starter? Or should I make a starter with some/all of the Activator? Thanks.

 

[Shooter]

Most likely it will be enough for a smaller batch. It's all a function of batch size and gravity of course. I make occasional two gallon batches and my SOP for those is pitching an activator pack.

 

[l1ranger]

use a pitching calculator, like shooter siad, it depends on gravity and batch size.