I decided to convert my hookah for vaping with my friends and move away from using tobacco while keeping the whole hookah experience. I basically want to know if I use an AC power supply (aka old psp power supply's) would it be safe since there's no ground just positive and negative. I haven't fried myself yet so should I be fine or am I "asking for it"? Here's a Pic of it so far just imagine the power supply attached at the end 



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