Kick the tires when your looking at buying a car too? 
Yes, this 'test' could have negative effects (tank breaks and you going to hospital screaming about how the glass "just broke" (not the stupid thing you did) and can they save your hand.
Unless you foresee this happening in your home
, the tank will never have a point stress like your trying to give it.
Of course there is the thought that you have overstressed the glass and have created a later failure. (ie Heisenberg uncertainty principle... observation you change the thing you observe).
But if it makes you feel better, you can afford a replacement & don't care about the above danger...have at it.
Dr Joe
.
Yes, this 'test' could have negative effects (tank breaks and you going to hospital screaming about how the glass "just broke" (not the stupid thing you did) and can they save your hand.
Unless you foresee this happening in your home
, the tank will never have a point stress like your trying to give it.Of course there is the thought that you have overstressed the glass and have created a later failure. (ie Heisenberg uncertainty principle... observation you change the thing you observe).
But if it makes you feel better, you can afford a replacement & don't care about the above danger...have at it.
Dr Joe
.

.