Ok so I finally recieved my stuff for the DIY CO2 system, I keep reading that champagne yeast is the best but I can only find 5g packets for $1.00 online and on the other hand I found 1lb of brewers yeast for $4.00. So I'm obviously leaning towards the brewers yeast. But do you think a pound is too much? Do you think it'll go bad? Do any of you have a source online to buy yeast? For some apparent reason I can't find any in my neighborhood in nyc so the internets my last resort.