So with the grow lab tent there was no light leak at all? I need it to be light proof as it will sit in my flower room.

I'm looking at a panasonic line of fans call whisperline. They claim to be quieter but I can't tell you that they are. It may just be the name. That said, they are designed for venting kitchens and bathrooms so I'm guessing they are pretty quiet. Here's a link: Westside Home