Hello!
I do this all the time in my steam tent! I've got it perfectly pitch black in there. Is anyone still on this thread? If so please respond! If you'd like to discuss this process please email me at joelbobmcgee@gmail.com
I have full visions and can actually bend my visual reality to be whatever I want. I can explain my process and help you understand how to enhance this process so you get the best results possible!