I recently purchased a 0.5 micron diffusion stone to use for force carbonating kegs. I've used it on about 3 batches so far and it works great! I can carb a beer in 2 days, rather than 2 weeks. I just use a short piece of 1/4" tubing with the diff stone on one end and shove the other end on the gas in post. I followed the instructions for the carbonating lid
, since it's the same concept. My question is, why do they suggest starting at 2 psi and gradually raising the pressure to serving pressure? If it is cold (at serving temp), why not just set at 10-12 psi and leave it?
The first batch I did according to their directions. The second batch I was a little more aggressive and started at about 8 psi, then bumped up to serving pressure within 12 hours. Beer was ready in the same amount of time. The batch I kegged last night I did the same way.