first timer

hi all great site. like most fed up paying for it so i'm gonna try to grow my own personal. i have a two door metal cabinet 72"x 36"x20". considering insulating and painting it a matt white. or a reflective interior. my plan is to purchase a 90watt led grow light. do you think it's nessary to have some kind of ventilation. i'm hoping that this might not be nessary because of the low heat from the led light and would like it light proof. have been doing alot of reading about the how to's on growing which i think i can handle. comments and suggestions would be greatly appreciated. thanks very much.

chucker.

First off welcome RIU is a great site for info. I'm going to suggest you get a hps instead of a led you will yield a lot more. Also ventilation is important especially for fresh air for your plants. Definitely do as much reading as you can before you start. Good luck