MC
Contributor
one of my tanks has a Hydro that expiring in the next month, but the VIP is good until June 2012. The shop will still fill it or require an in date hydro.
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The only way it will happen is if they see the VIS is OK, assume the hydro is OK, and go ahead without checking. It can happen, but I don't think counting on negligence is a good plan.
I would bet money that the tank monkeys will fill it.
I think the scenario I described above is likely enough that I will not take your bet. That still does not make it a good idea.