Pump question..

Is it best to run my pump to full vac, turn pump off and hold vac for hours? Or to let my pump continuosly run at full vac for an extended amount of time? Ive been only running the pump to full vac and wonder if im hindering the process? Thanks!

We only pull to about -29.5" Hg, because THC boils below room temperature at full vacuum.

So, basically never go over 29.5, thanks i didn't realize a higher vac could destroy thc! So would i get it up to 29.5 for a certain amount of time then release, pump and repeat many times? Or would I only need to pump to 29.5 once and let sit closed on desired temp for awhile?