does it matter how hard u pull on the bowl/bong/blunt???

i'm building a vacuum bong, and i wanna know if the vacuum will "overpull"??
sheist Reviewed by sheist on . soft vs hard pull does it matter how hard u pull on the bowl/bong/blunt??? i'm building a vacuum bong, and i wanna know if the vacuum will "overpull"?? Rating: 5