Do yall reccomend the co2 tanks inside the fridge or outside? I have been keeping my co2 bottle inside and notice the pressure inside of my tank dropping pressure.
The cold won't mess with your regulator...just the co2 pressure in the tank.
It will not effect the serving pressure once you have it set. The benefit of having it outside the fridge are more room, and no rusty keg if its not aluminum.
this is normal. the tank pressure isn't that important. Most of your volume is liquid and the gauge only reads the pressure in the gaseous headspace which is small and will change drastically with temp change.
Co2 tanks act like propane tanks, not like o2, argon or nitrogen tanks which are actually pressurized gas.