Due to space issues it would be ideal if I could lay the CO2 canister down instead of placing it upright. But this is propably not a good idea as the CO2 will come out in liquid form, right?
I've heard that the impurities in the cylinder settle down at the bottom. So if you were to lay it down you would also be shooting those into your tank. I think you'd be best to find a way to keep it upright.