Funny thing is I did check it for leaks originaly but I must have one cause I have gone through 1-10Lb tank and 1-15Lb tank on my planted 360G tank in roughly 2 months
I just noticed the second tank is just about empty???(today)
The first one went very quick so I did check for leaks(regulator to tank gasket leaking) fixed that and now the second tank is empty...hmmm
I'll have to re check tomorrow with a new tank of Co2 (crap)

Sometimes me thinks to much about other things in my tank and does not pay attention to the obvious.
Thank you!